56605555660 has 24 divisors (see below), whose sum is σ = 119098976976. Its totient is φ = 22598925120.

The previous prime is 56605555627. The next prime is 56605555679. The reversal of 56605555660 is 6655550665.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2695351 + ... + 2716270.

It is an arithmetic number, because the mean of its divisors is an integer number (4962457374).

Almost surely, 2^56605555660 is an apocalyptic number.

It is an amenable number.

56605555660 is an abundant number, since it is smaller than the sum of its proper divisors (62493421316).

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

56605555660 is a wasteful number, since it uses less digits than its factorization.

56605555660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5412153 (or 5412151 counting only the distinct ones).

The product of its (nonzero) digits is 4050000, while the sum is 49.

The spelling of 56605555660 in words is "fifty-six billion, six hundred five million, five hundred fifty-five thousand, six hundred sixty".