55556178898 has 16 divisors (see below), whose sum is σ = 91573693344. Its totient is φ = 25068480160.

The previous prime is 55556178871. The next prime is 55556178901. The reversal of 55556178898 is 89887165555.

55556178898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9213340 + ... + 9219367.

It is an arithmetic number, because the mean of its divisors is an integer number (5723355834).

Almost surely, 2^55556178898 is an apocalyptic number.

55556178898 is a deficient number, since it is larger than the sum of its proper divisors (36017514446).

55556178898 is a wasteful number, since it uses less digits than its factorization.

55556178898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18432857.

The product of its digits is 120960000, while the sum is 67.

The spelling of 55556178898 in words is "fifty-five billion, five hundred fifty-six million, one hundred seventy-eight thousand, eight hundred ninety-eight".