20313103564 has 12 divisors (see below), whose sum is σ = 38282387584. Its totient is φ = 9375278544.

The previous prime is 20313103549. The next prime is 20313103567. The reversal of 20313103564 is 46530131302.

It is not an unprimeable number, because it can be changed into a prime (20313103567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195318252 + ... + 195318355.

Almost surely, 2^20313103564 is an apocalyptic number.

It is an amenable number.

20313103564 is a deficient number, since it is larger than the sum of its proper divisors (17969284020).

20313103564 is a wasteful number, since it uses less digits than its factorization.

20313103564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390636624 (or 390636622 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 20313103564 its reverse (46530131302), we get a palindrome (66843234866).

The spelling of 20313103564 in words is "twenty billion, three hundred thirteen million, one hundred three thousand, five hundred sixty-four".