55958665161 has 32 divisors (see below), whose sum is σ = 89226846208. Its totient is φ = 30520955520.

The previous prime is 55958665129. The next prime is 55958665181. The reversal of 55958665161 is 16156685955.

It is not a de Polignac number, because 55958665161 - 2⁵ = 55958665129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55958665181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 541231 + ... + 636276.

It is an arithmetic number, because the mean of its divisors is an integer number (2788338944).

Almost surely, 2^55958665161 is an apocalyptic number.

It is an amenable number.

55958665161 is a deficient number, since it is larger than the sum of its proper divisors (33268181047).

55958665161 is a wasteful number, since it uses less digits than its factorization.

55958665161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177621.

The product of its digits is 9720000, while the sum is 57.

The spelling of 55958665161 in words is "fifty-five billion, nine hundred fifty-eight million, six hundred sixty-five thousand, one hundred sixty-one".