56631576915 has 12 divisors (see below), whose sum is σ = 98161400064. Its totient is φ = 30203507664.

The previous prime is 56631576901. The next prime is 56631576949. The reversal of 56631576915 is 51967513665.

56631576915 is a `hidden beast` number, since 5 + 6 + 63 + 1 + 576 + 9 + 1 + 5 = 666.

It is not a de Polignac number, because 56631576915 - 2⁴ = 56631576899 is a prime.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 629239699 + ... + 629239788.

It is an arithmetic number, because the mean of its divisors is an integer number (8180116672).

Almost surely, 2^56631576915 is an apocalyptic number.

56631576915 is a deficient number, since it is larger than the sum of its proper divisors (41529823149).

56631576915 is a wasteful number, since it uses less digits than its factorization.

56631576915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258479498 (or 1258479495 counting only the distinct ones).

The product of its digits is 5103000, while the sum is 54.

The spelling of 56631576915 in words is "fifty-six billion, six hundred thirty-one million, five hundred seventy-six thousand, nine hundred fifteen".