57115720000 has 70 divisors (see below), whose sum is σ = 141628522178. Its totient is φ = 22846272000.

The previous prime is 57115719977. The next prime is 57115720001. The reversal of 57115720000 is 2751175.

It can be written as a sum of positive squares in 5 ways, for example, as 35696812096 + 21418907904 = 188936^2 + 146352^2 .

It is a super-2 number, since 2×57115720000² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57115720001) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 673947 + ... + 753946.

Almost surely, 2^57115720000 is an apocalyptic number.

57115720000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

57115720000 is an abundant number, since it is smaller than the sum of its proper divisors (84512802178).

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

57115720000 is an equidigital number, since it uses as much as digits as its factorization.

57115720000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427925 (or 1427900 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 28.

The spelling of 57115720000 in words is "fifty-seven billion, one hundred fifteen million, seven hundred twenty thousand".