56540111585 has 16 divisors (see below), whose sum is σ = 69387287040. Its totient is φ = 44217326400.

The previous prime is 56540111581. The next prime is 56540111587. The reversal of 56540111585 is 58511104565.

It is a happy number.

It is not a de Polignac number, because 56540111585 - 2² = 56540111581 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56540111581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 668717 + ... + 748506.

It is an arithmetic number, because the mean of its divisors is an integer number (4336705440).

Almost surely, 2^56540111585 is an apocalyptic number.

It is an amenable number.

56540111585 is a deficient number, since it is larger than the sum of its proper divisors (12847175455).

56540111585 is a wasteful number, since it uses less digits than its factorization.

56540111585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1417408.

The product of its (nonzero) digits is 120000, while the sum is 41.

The spelling of 56540111585 in words is "fifty-six billion, five hundred forty million, one hundred eleven thousand, five hundred eighty-five".