55987078955 has 16 divisors (see below), whose sum is σ = 69365631744. Its totient is φ = 43336151040.

The previous prime is 55987078943. The next prime is 55987078981.

55987078955 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55987078955 - 2⁶ = 55987078891 is a prime.

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, 802427 + ... + 869403.

It is an arithmetic number, because the mean of its divisors is an integer number (4335351984).

Almost surely, 2^55987078955 is an apocalyptic number.

55987078955 is a deficient number, since it is larger than the sum of its proper divisors (13378552789).

55987078955 is a wasteful number, since it uses less digits than its factorization.

55987078955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72406.

The product of its (nonzero) digits is 158760000, while the sum is 68.

The spelling of 55987078955 in words is "fifty-five billion, nine hundred eighty-seven million, seventy-eight thousand, nine hundred fifty-five".