55156865155 has 16 divisors (see below), whose sum is σ = 75648657600. Its totient is φ = 37819372032.

The previous prime is 55156865129. The next prime is 55156865161.

55156865155 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 55156865155 - 2²¹ = 55154768003 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, 609271 + ... + 693919.

It is an arithmetic number, because the mean of its divisors is an integer number (4728041100).

Almost surely, 2^55156865155 is an apocalyptic number.

55156865155 is a deficient number, since it is larger than the sum of its proper divisors (20491792445).

55156865155 is a wasteful number, since it uses less digits than its factorization.

55156865155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103278.

The product of its digits is 4500000, while the sum is 52.

The spelling of 55156865155 in words is "fifty-five billion, one hundred fifty-six million, eight hundred sixty-five thousand, one hundred fifty-five".