55113431155 has 8 divisors (see below), whose sum is σ = 66348775584. Its totient is φ = 43948972800.

The previous prime is 55113431137. The next prime is 55113431159.

55113431155 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55113431155 - 2²⁵ = 55079876723 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55113431155.

It is not an unprimeable number, because it can be changed into a prime (55113431159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17719806 + ... + 17722915.

It is an arithmetic number, because the mean of its divisors is an integer number (8293596948).

Almost surely, 2^55113431155 is an apocalyptic number.

55113431155 is a deficient number, since it is larger than the sum of its proper divisors (11235344429).

55113431155 is a wasteful number, since it uses less digits than its factorization.

55113431155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35443037.

The product of its digits is 22500, while the sum is 34.

The spelling of 55113431155 in words is "fifty-five billion, one hundred thirteen million, four hundred thirty-one thousand, one hundred fifty-five".