56165156660 has 48 divisors (see below), whose sum is σ = 123222148560. Its totient is φ = 21476582400.

The previous prime is 56165156599. The next prime is 56165156681. The reversal of 56165156660 is 6665156165.

It can be written as a sum of positive squares in 8 ways, for example, as 3333214756 + 52831941904 = 57734^2 + 229852^2 .

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 420809 + ... + 537968.

It is an arithmetic number, because the mean of its divisors is an integer number (2567128095).

Almost surely, 2^56165156660 is an apocalyptic number.

It is an amenable number.

56165156660 is an abundant number, since it is smaller than the sum of its proper divisors (67056991900).

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

56165156660 is a wasteful number, since it uses less digits than its factorization.

56165156660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 958916 (or 958914 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 56165156660 in words is "fifty-six billion, one hundred sixty-five million, one hundred fifty-six thousand, six hundred sixty".