56510417500 has 120 divisors (see below), whose sum is σ = 130399758720. Its totient is φ = 21362040000.

The previous prime is 56510417477. The next prime is 56510417549. The reversal of 56510417500 is 571401565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 23321289 + ... + 23323711.

It is an arithmetic number, because the mean of its divisors is an integer number (1086664656).

Almost surely, 2^56510417500 is an apocalyptic number.

56510417500 is a gapful number since it is divisible by the number (50) 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 56510417500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65199879360).

56510417500 is an abundant number, since it is smaller than the sum of its proper divisors (73889341220).

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

56510417500 is a wasteful number, since it uses less digits than its factorization.

56510417500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2957 (or 2940 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 34.

The spelling of 56510417500 in words is "fifty-six billion, five hundred ten million, four hundred seventeen thousand, five hundred".