56616005656 has 16 divisors (see below), whose sum is σ = 121320012240. Its totient is φ = 24264002400.

The previous prime is 56616005623. The next prime is 56616005669. The reversal of 56616005656 is 65650061665.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505499995 + ... + 505500106.

It is an arithmetic number, because the mean of its divisors is an integer number (7582500765).

Almost surely, 2^56616005656 is an apocalyptic number.

56616005656 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

56616005656 is an abundant number, since it is smaller than the sum of its proper divisors (64704006584).

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

56616005656 is a wasteful number, since it uses less digits than its factorization.

56616005656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011000114 (or 1011000110 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 46.

The spelling of 56616005656 in words is "fifty-six billion, six hundred sixteen million, five thousand, six hundred fifty-six".