# Python Program to Find the Factorial of a Number

In this example, we will write a simple program to take input number from the user and display the factorial of the number. To better understand this example, make sure you have knowledge of the following tutorials:-

The factorial of a positive integer n, denoted by n!, is the product of all positive integers less than or equal to n.

## Python Program to Find the Factorial of a Number

number = int(input("Enter a number: "))
if number < 0:
print("Factorial doesn't exists for negative number !!!")
elif number == 0:
print("The factorial of 0 is 1")
else:
factorial = 1
for i in range(1, number + 1):
factorial *= i
print("The factorial of", number, "is", factorial)

The output of the above program is:-

Enter a number: 5
The factorial of 5 is 120