What is the factorial of 20? (20!) 20 Factorial

What is the factorial of 20?

Here we will show you how to calculate the factorial of 20 (aka 20 factorial) and give you the exact answer.

Before we begin, note that the factorial of 20 can be written as 20 followed by an exclamation mark like this: 20!

Factorial of 20 means that you multiply 20 by every number below it. Therefore, you calculate the factorial of 20 by multiplying 20 by 19 and then by 18 and so on all the way down to 1. In other words, we calculate 20 × 19 × 18 × ... × 1 to get 20 factorial.

The answer to 20 factorial (20!) contains 19 digits, and below is the exact entire answer to 20!

2,432,902,008,176,640,000

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