56519151680 has 112 divisors (see below), whose sum is σ = 138396360240. Its totient is φ = 21969174528.

The previous prime is 56519151679. The next prime is 56519151701. The reversal of 56519151680 is 8615191565.

It can be written as a sum of positive squares in 8 ways, for example, as 569872384 + 55949279296 = 23872^2 + 236536^2 .

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, 11281016 + ... + 11286024.

Almost surely, 2^56519151680 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 56519151680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69198180120).

56519151680 is an abundant number, since it is smaller than the sum of its proper divisors (81877208560).

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

56519151680 is a wasteful number, since it uses less digits than its factorization.

56519151680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6016 (or 6006 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 47.

The spelling of 56519151680 in words is "fifty-six billion, five hundred nineteen million, one hundred fifty-one thousand, six hundred eighty".