20313388946 has 16 divisors (see below), whose sum is σ = 32513143200. Its totient is φ = 9490320288.

The previous prime is 20313388939. The next prime is 20313388967. The reversal of 20313388946 is 64988331302.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20313388946.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3658616 + ... + 3664163.

It is an arithmetic number, because the mean of its divisors is an integer number (2032071450).

Almost surely, 2^20313388946 is an apocalyptic number.

20313388946 is a deficient number, since it is larger than the sum of its proper divisors (12199754254).

20313388946 is a wasteful number, since it uses less digits than its factorization.

20313388946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7322873.

The product of its (nonzero) digits is 746496, while the sum is 47.

The spelling of 20313388946 in words is "twenty billion, three hundred thirteen million, three hundred eighty-eight thousand, nine hundred forty-six".