56566551165 has 16 divisors (see below), whose sum is σ = 91336819200. Its totient is φ = 29892048192.

The previous prime is 56566551133. The next prime is 56566551191. The reversal of 56566551165 is 56115566565.

56566551165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56566551165 - 2⁵ = 56566551133 is a prime.

It is a congruent number.

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, 17297005 + ... + 17300274.

It is an arithmetic number, because the mean of its divisors is an integer number (5708551200).

Almost surely, 2^56566551165 is an apocalyptic number.

It is an amenable number.

56566551165 is a deficient number, since it is larger than the sum of its proper divisors (34770268035).

56566551165 is a wasteful number, since it uses less digits than its factorization.

56566551165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34597396.

The product of its digits is 4050000, while the sum is 51.

The spelling of 56566551165 in words is "fifty-six billion, five hundred sixty-six million, five hundred fifty-one thousand, one hundred sixty-five".