56631707904 has 72 divisors (see below), whose sum is σ = 153277679520. Its totient is φ = 18557267968.

The previous prime is 56631707903. The next prime is 56631707917. The reversal of 56631707904 is 40970713665.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (56631707903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 579597 + ... + 670220.

It is an arithmetic number, because the mean of its divisors is an integer number (2128856660).

Almost surely, 2^56631707904 is an apocalyptic number.

It is an amenable number.

56631707904 is an abundant number, since it is smaller than the sum of its proper divisors (96645971616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56631707904 is a wasteful number, since it uses less digits than its factorization.

56631707904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249895 (or 1249881 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 48.

The spelling of 56631707904 in words is "fifty-six billion, six hundred thirty-one million, seven hundred seven thousand, nine hundred four".