56857729080 has 128 divisors (see below), whose sum is σ = 175300070400. Its totient is φ = 14744294400.

The previous prime is 56857729043. The next prime is 56857729091. The reversal of 56857729080 is 8092775865.

It is a happy number.

56857729080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×56857729080² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56857729080.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1511541 + ... + 1548699.

It is an arithmetic number, because the mean of its divisors is an integer number (1369531800).

Almost surely, 2^56857729080 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 56857729080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87650035200).

56857729080 is an abundant number, since it is smaller than the sum of its proper divisors (118442341320).

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

56857729080 is a wasteful number, since it uses less digits than its factorization.

56857729080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37525 (or 37521 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 57.

The spelling of 56857729080 in words is "fifty-six billion, eight hundred fifty-seven million, seven hundred twenty-nine thousand, eighty".