55165515155 has 16 divisors (see below), whose sum is σ = 67634417664. Its totient is φ = 43175971680.

The previous prime is 55165515149. The next prime is 55165515169. The reversal of 55165515155 is 55151556155.

It is not a de Polignac number, because 55165515155 - 2⁶ = 55165515091 is a prime.

It is a Duffinian 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, 551450 + ... + 643760.

It is an arithmetic number, because the mean of its divisors is an integer number (4227151104).

Almost surely, 2^55165515155 is an apocalyptic number.

55165515155 is a deficient number, since it is larger than the sum of its proper divisors (12468902509).

55165515155 is a wasteful number, since it uses less digits than its factorization.

55165515155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94906.

The product of its digits is 468750, while the sum is 44.

The spelling of 55165515155 in words is "fifty-five billion, one hundred sixty-five million, five hundred fifteen thousand, one hundred fifty-five".