56251518180 has 648 divisors, whose sum is σ = 199410011136. Its totient is φ = 11831339520.

The previous prime is 56251518179. The next prime is 56251518181. The reversal of 56251518180 is 8181515265.

It is an interprime number because it is at equal distance from previous prime (56251518179) and next prime (56251518181).

It is not an unprimeable number, because it can be changed into a prime (56251518181) by changing a digit.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 442925277 + ... + 442925403.

Almost surely, 2^56251518180 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 56251518180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99705005568).

56251518180 is an abundant number, since it is smaller than the sum of its proper divisors (143158492956).

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

56251518180 is a wasteful number, since it uses less digits than its factorization.

56251518180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 42.

The spelling of 56251518180 in words is "fifty-six billion, two hundred fifty-one million, five hundred eighteen thousand, one hundred eighty".