56491718570 has 16 divisors (see below), whose sum is σ = 116211535488. Its totient is φ = 19368589200.

The previous prime is 56491718557. The next prime is 56491718587. The reversal of 56491718570 is 7581719465.

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, 403512206 + ... + 403512345.

It is an arithmetic number, because the mean of its divisors is an integer number (7263220968).

Almost surely, 2^56491718570 is an apocalyptic number.

56491718570 is an abundant number, since it is smaller than the sum of its proper divisors (59719816918).

56491718570 is a wasteful number, since it uses less digits than its factorization.

56491718570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807024565.

The product of its (nonzero) digits is 2116800, while the sum is 53.

The spelling of 56491718570 in words is "fifty-six billion, four hundred ninety-one million, seven hundred eighteen thousand, five hundred seventy".