55708172185232 has 240 divisors, whose sum is σ = 129490487078400. Its totient is φ = 23141218738176.

The previous prime is 55708172185217. The next prime is 55708172185349. The reversal of 55708172185232 is 23258127180755.

It is a super-2 number, since 2×55708172185232² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 881440769 + ... + 881503967.

It is an arithmetic number, because the mean of its divisors is an integer number (539543696160).

Almost surely, 2^{55708172185232} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55708172185232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64745243539200).

55708172185232 is an abundant number, since it is smaller than the sum of its proper divisors (73782314893168).

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

55708172185232 is a wasteful number, since it uses less digits than its factorization.

55708172185232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63558 (or 63545 counting only the distinct ones).

The product of its (nonzero) digits is 9408000, while the sum is 56.

The spelling of 55708172185232 in words is "fifty-five trillion, seven hundred eight billion, one hundred seventy-two million, one hundred eighty-five thousand, two hundred thirty-two".