56511606110561 has 8 divisors (see below), whose sum is σ = 65902747651200. Its totient is φ = 48438519523044.

The previous prime is 56511606110549. The next prime is 56511606110599. The reversal of 56511606110561 is 16501160611565.

It is a de Polignac number, because none of the positive numbers 2^k-56511606110561 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56511606110161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82378434221 + ... + 82378434906.

It is an arithmetic number, because the mean of its divisors is an integer number (8237843456400).

Almost surely, 2^{56511606110561} is an apocalyptic number.

It is an amenable number.

56511606110561 is a deficient number, since it is larger than the sum of its proper divisors (9391141540639).

56511606110561 is an equidigital number, since it uses as much as digits as its factorization.

56511606110561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164756869148 (or 164756869134 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 44.

The spelling of 56511606110561 in words is "fifty-six trillion, five hundred eleven billion, six hundred six million, one hundred ten thousand, five hundred sixty-one".