55189232164 has 48 divisors (see below), whose sum is σ = 107666657280. Its totient is φ = 24542987040.

The previous prime is 55189232149. The next prime is 55189232173. The reversal of 55189232164 is 46123298155.

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, 302797 + ... + 449515.

It is an arithmetic number, because the mean of its divisors is an integer number (2243055360).

Almost surely, 2^55189232164 is an apocalyptic number.

It is an amenable number.

55189232164 is a deficient number, since it is larger than the sum of its proper divisors (52477425116).

55189232164 is a wasteful number, since it uses less digits than its factorization.

55189232164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146920 (or 146918 counting only the distinct ones).

The product of its digits is 518400, while the sum is 46.

The spelling of 55189232164 in words is "fifty-five billion, one hundred eighty-nine million, two hundred thirty-two thousand, one hundred sixty-four".