55155499455155 has 32 divisors (see below), whose sum is σ = 72598074854400. Its totient is φ = 39894093233280.

The previous prime is 55155499455151. The next prime is 55155499455209.

55155499455155 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55155499455155 - 2² = 55155499455151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55155499455151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23998034 + ... + 26195736.

It is an arithmetic number, because the mean of its divisors is an integer number (2268689839200).

Almost surely, 2^{55155499455155} is an apocalyptic number.

55155499455155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55155499455155 is a deficient number, since it is larger than the sum of its proper divisors (17442575399245).

55155499455155 is a wasteful number, since it uses less digits than its factorization.

55155499455155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2200211.

The product of its digits is 506250000, while the sum is 68.

The spelling of 55155499455155 in words is "fifty-five trillion, one hundred fifty-five billion, four hundred ninety-nine million, four hundred fifty-five thousand, one hundred fifty-five".