56509774832 has 80 divisors (see below), whose sum is σ = 125957652480. Its totient is φ = 24058592256.

The previous prime is 56509774801. The next prime is 56509774843. The reversal of 56509774832 is 23847790565.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11279144 + ... + 11284152.

It is an arithmetic number, because the mean of its divisors is an integer number (1574470656).

Almost surely, 2^56509774832 is an apocalyptic number.

It is an amenable number.

56509774832 is an abundant number, since it is smaller than the sum of its proper divisors (69447877648).

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

56509774832 is a wasteful number, since it uses less digits than its factorization.

56509774832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5670 (or 5664 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 56.

The spelling of 56509774832 in words is "fifty-six billion, five hundred nine million, seven hundred seventy-four thousand, eight hundred thirty-two".