56865419520 has 576 divisors, whose sum is σ = 224644299264. Its totient is φ = 11938037760.

The previous prime is 56865419483. The next prime is 56865419537. The reversal of 56865419520 is 2591456865.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 123352090 + ... + 123352550.

It is an arithmetic number, because the mean of its divisors is an integer number (390007464).

Almost surely, 2^56865419520 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 56865419520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112322149632).

56865419520 is an abundant number, since it is smaller than the sum of its proper divisors (167778879744).

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

56865419520 is a wasteful number, since it uses less digits than its factorization.

56865419520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858 (or 844 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 51.

The spelling of 56865419520 in words is "fifty-six billion, eight hundred sixty-five million, four hundred nineteen thousand, five hundred twenty".