55516855770 has 48 divisors (see below), whose sum is σ = 144357337800. Its totient is φ = 14803108992.

The previous prime is 55516855747. The next prime is 55516855829. The reversal of 55516855770 is 7755861555.

55516855770 is a `hidden beast` number, since 5 + 5 + 5 + 1 + 68 + 5 + 577 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 40544641449 + 14972214321 = 201357^2 + 122361^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1251612 + ... + 1295208.

Almost surely, 2^55516855770 is an apocalyptic number.

55516855770 is an abundant number, since it is smaller than the sum of its proper divisors (88840482030).

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

55516855770 is a wasteful number, since it uses less digits than its factorization.

55516855770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57759 (or 57756 counting only the distinct ones).

The product of its (nonzero) digits is 7350000, while the sum is 54.

The spelling of 55516855770 in words is "fifty-five billion, five hundred sixteen million, eight hundred fifty-five thousand, seven hundred seventy".