57257812008 has 128 divisors (see below), whose sum is σ = 162086841600. Its totient is φ = 18958665600.

The previous prime is 57257811907. The next prime is 57257812009. The reversal of 57257812008 is 80021875275.

57257812008 is a `hidden beast` number, since 5 + 72 + 578 + 1 + 2 + 0 + 0 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (57257812009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2631060 + ... + 2652732.

It is an arithmetic number, because the mean of its divisors is an integer number (1266303450).

Almost surely, 2^57257812008 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 57257812008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81043420800).

57257812008 is an abundant number, since it is smaller than the sum of its proper divisors (104829029592).

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

57257812008 is a wasteful number, since it uses less digits than its factorization.

57257812008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21851 (or 21829 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 45.

The spelling of 57257812008 in words is "fifty-seven billion, two hundred fifty-seven million, eight hundred twelve thousand, eight".