Factorial of 20 (20!)

Given: Number = 20
Formula:
n! = n x (n -1) x (n -2) x . . . x 2 x 1
20! = 20 x 19 x 18 x 17 x 16 x 15 x 14 x 13 x 12 x 11 x 10 x 9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1
Factorial of 20: 20! = 2,432,902,008,176,640,000