55817623120 has 80 divisors (see below), whose sum is σ = 148345112448. Its totient is φ = 19133637120.

The previous prime is 55817623093. The next prime is 55817623177. The reversal of 55817623120 is 2132671855.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 5542890 + ... + 5552950.

Almost surely, 2^55817623120 is an apocalyptic number.

It is an amenable number.

55817623120 is an abundant number, since it is smaller than the sum of its proper divisors (92527489328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55817623120 is a wasteful number, since it uses less digits than its factorization.

55817623120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19988 (or 19982 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 55817623120 in words is "fifty-five billion, eight hundred seventeen million, six hundred twenty-three thousand, one hundred twenty".