57391072000 has 144 divisors (see below), whose sum is σ = 149186261952. Its totient is φ = 21958041600.

The previous prime is 57391071989. The next prime is 57391072019. The reversal of 57391072000 is 27019375.

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, 697012 + ... + 774988.

It is an arithmetic number, because the mean of its divisors is an integer number (1036015708).

Almost surely, 2^57391072000 is an apocalyptic number.

57391072000 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 57391072000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74593130976).

57391072000 is an abundant number, since it is smaller than the sum of its proper divisors (91795189952).

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

57391072000 is an equidigital number, since it uses as much as digits as its factorization.

57391072000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78031 (or 78007 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 34.

The spelling of 57391072000 in words is "fifty-seven billion, three hundred ninety-one million, seventy-two thousand".