The Learning Point‎ > ‎Mathematics‎ > ‎Factorial‎ > ‎

40! Factorial of 40

Value of 40! i.e, Factorial of 40 =
81591528324789773434
56112695961158942720
00000000



In general, the factorial of a number N = N*(N-1)*(N-2)....1
Factorial of a non-negative integer n is the product of all positive integers less than or equal to n. Factorials are commonly encountered in permutations, combinations, number theory and series expansions of trigonometric and other functions (Taylor series).

Number of trailing zeros in 40! = 9
To understand factorials, you might find it useful to read the Factorial tutorial over here.
Comments