55582519128 has 64 divisors (see below), whose sum is σ = 146145254400. Its totient is φ = 17591533440.

The previous prime is 55582519123. The next prime is 55582519147. The reversal of 55582519128 is 82191528555.

It is a happy number.

It is a super-2 number, since 2×55582519128² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55582519123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 665358 + ... + 744221.

It is an arithmetic number, because the mean of its divisors is an integer number (2283519600).

Almost surely, 2^55582519128 is an apocalyptic number.

It is an amenable number.

55582519128 is an abundant number, since it is smaller than the sum of its proper divisors (90562735272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55582519128 is a wasteful number, since it uses less digits than its factorization.

55582519128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409672 (or 1409668 counting only the distinct ones).

The product of its digits is 1440000, while the sum is 51.

The spelling of 55582519128 in words is "fifty-five billion, five hundred eighty-two million, five hundred nineteen thousand, one hundred twenty-eight".