55479899897455 has 64 divisors (see below), whose sum is σ = 77378005555200. Its totient is φ = 37761841595520.

The previous prime is 55479899897453. The next prime is 55479899897473.

55479899897455 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55479899897455 - 2¹ = 55479899897453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55479899897453) 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, 2014580076 + ... + 2014607614.

It is an arithmetic number, because the mean of its divisors is an integer number (1209031336800).

Almost surely, 2^{55479899897455} is an apocalyptic number.

55479899897455 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55479899897455 is a deficient number, since it is larger than the sum of its proper divisors (21898105657745).

55479899897455 is a wasteful number, since it uses less digits than its factorization.

55479899897455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50884.

The product of its digits is 205752960000, while the sum is 94.

The spelling of 55479899897455 in words is "fifty-five trillion, four hundred seventy-nine billion, eight hundred ninety-nine million, eight hundred ninety-seven thousand, four hundred fifty-five".