56171051660 has 48 divisors (see below), whose sum is σ = 124616079840. Its totient is φ = 21208988160.

The previous prime is 56171051659. The next prime is 56171051707. The reversal of 56171051660 is 6615017165.

It is a Harshad number since it is a multiple of its sum of digits (38).

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, 161561 + ... + 372080.

It is an arithmetic number, because the mean of its divisors is an integer number (2596168330).

Almost surely, 2^56171051660 is an apocalyptic number.

It is an amenable number.

56171051660 is an abundant number, since it is smaller than the sum of its proper divisors (68445028180).

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

56171051660 is a wasteful number, since it uses less digits than its factorization.

56171051660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533946 (or 533944 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 38.

The spelling of 56171051660 in words is "fifty-six billion, one hundred seventy-one million, fifty-one thousand, six hundred sixty".