55396315584 has 112 divisors (see below), whose sum is σ = 163085068800. Its totient is φ = 18439342848.

The previous prime is 55396315571. The next prime is 55396315607. The reversal of 55396315584 is 48551369355.

55396315584 is a `hidden beast` number, since 5 + 53 + 9 + 6 + 3 + 1 + 5 + 584 = 666.

It is a super-2 number, since 2×55396315584² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 55396315584.

It is a congruent number.

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, 1220139 + ... + 1264725.

Almost surely, 2^55396315584 is an apocalyptic number.

55396315584 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55396315584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81542534400).

55396315584 is an abundant number, since it is smaller than the sum of its proper divisors (107688753216).

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

55396315584 is a wasteful number, since it uses less digits than its factorization.

55396315584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45327 (or 45311 counting only the distinct ones).

The product of its digits is 9720000, while the sum is 54.

The spelling of 55396315584 in words is "fifty-five billion, three hundred ninety-six million, three hundred fifteen thousand, five hundred eighty-four".