55575555557555 has 64 divisors (see below), whose sum is σ = 77722391448576. Its totient is φ = 37701780480000.

The previous prime is 55575555557551. The next prime is 55575555557629.

55575555557555 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55575555557555 - 2² = 55575555557551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55575555557551) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 60678560 + ... + 61587650.

It is an arithmetic number, because the mean of its divisors is an integer number (1214412366384).

Almost surely, 2^{55575555557555} is an apocalyptic number.

55575555557555 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55575555557555 is a deficient number, since it is larger than the sum of its proper divisors (22146835891021).

55575555557555 is a wasteful number, since it uses less digits than its factorization.

55575555557555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909708.

The product of its digits is 11962890625, while the sum is 74.

The spelling of 55575555557555 in words is "fifty-five trillion, five hundred seventy-five billion, five hundred fifty-five million, five hundred fifty-seven thousand, five hundred fifty-five".