Apple (NASDAQ:AAPL) shares pulled back a few percentage points in after-hour trading on Tuesday following the company's first-quarter earnings release. Slowing revenue growth in Q1 and guidance for a 11% year-over-year decline in revenue for the company's current quarter has some investors concerned about Apple's growth potential. But, as I said ahead of the report, guidance for a year-over-year decline in Apple's second-quarter revenue wouldn't concern me.

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Here are 15 facts from Apple's most recent report that have me confident in the stock as a long-term holding.

1. Apple's first fiscal quarter revenue, net income, and EPS rose to $75.9 billion, $18.4 billion, and $3.28, respectively, in Q1 -- a record for all three metrics. This represents year-over-year growth of 1.7%, 2.2%, and 7.2%, respectively.

2. The company's outsized year-over-year growth in EPS compared to net income was driven by its aggressive share repurchases between Q1 2015 and Q1 2016.

3. Apple returned over $9 billion to investors through share repurchases and dividends in Q1.

4. The company's gross profit margin for the quarter was 40.1% -- up from 37.9% in the year-ago quarter.

5. Apple sold 74.8 million iPhones during the quarter, up slightly from 74.5 million units in the year-ago quarter.

6. Revenue for the company's services segment, which includes sales from iTunes, Apple Music, the App Store, Licensing, Service Parts, iCloud, and Apple Pay, increased 26% compared to the year-ago quarter. This segment now represents about 8% of Apple's total revenue -- up from 6.4% of revenue in the year-ago quarter.

7. Apple said the gross profit margin for its services segment mirrors its robust company average gross profit margin of 40%.

8. Revenue from Apple's other products segment, which includes sales of the Apple TV, Apple Watch, Beats products, iPod, and other Apple-branded and third-party accessories, jumped 62% compared to the year-ago quarter. This segment now represents 5.7% of Apple's revenue -- up from 3.6% of revenue in the year-ago quarter.

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9. Apple saw a greater rate of switchers from Android to iPhone in Q1 than ever before.

10. The company's balance sheet now boasts $216 billion in cash, cash equivalents, and marketable securities, or $39 per share.

11. Apple now has an installed base of 1 billion active devices, up 25%, year over year.

13. The average selling price for Apple's iPhone in the quarter was $691 -- up from $687 in the year-ago quarter. In constant currency, this figure would have been $740.

14. India revenue in Q1 was up 38% from the year-ago quarter, or 48% in constant currency.

15. iPhone unit sales for Q1 in China and India were up 19% and 76%, respectively, year over year.

With these 15 facts in mind, a year-over-year decline in a single quarter is just a symptom of a company that generates over 60% of its revenue from a single product. Don't forget: In the year-ago quarter, Apple's iPhone unit sales increased 40% -- and iPhone sales soared 55%. This very recent growth doesn't smell like a company in decline. For now, expectations for a single quarter of declining revenue is only a single data point among the many reasons Apple looks like an outstanding investment.

If Apple's revenue declines over several iPhone cycles, then I might rethink my thesis. But for now I'll remain an Apple bull.

Oh, and let's not forget that Apple trades at less than 11 times earnings.

Daniel Sparks owns shares of Apple. The Motley Fool owns shares of and recommends Apple. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.