55108736878 has 32 divisors (see below), whose sum is σ = 90212411520. Its totient is φ = 25096573440.

The previous prime is 55108736861. The next prime is 55108736923. The reversal of 55108736878 is 87863780155.

It is a happy number.

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, 642651 + ... + 723337.

It is an arithmetic number, because the mean of its divisors is an integer number (2819137860).

Almost surely, 2^55108736878 is an apocalyptic number.

55108736878 is a deficient number, since it is larger than the sum of its proper divisors (35103674642).

55108736878 is a wasteful number, since it uses less digits than its factorization.

55108736878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81052.

The product of its (nonzero) digits is 11289600, while the sum is 58.

The spelling of 55108736878 in words is "fifty-five billion, one hundred eight million, seven hundred thirty-six thousand, eight hundred seventy-eight".