57126365640 has 64 divisors (see below), whose sum is σ = 190421222400. Its totient is φ = 15233697216.

The previous prime is 57126365579. The next prime is 57126365651. The reversal of 57126365640 is 4656362175.

57126365640 is a `hidden beast` number, since 5 + 7 + 1 + 2 + 636 + 5 + 6 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 26446312 + ... + 26448471.

It is an arithmetic number, because the mean of its divisors is an integer number (2975331600).

Almost surely, 2^57126365640 is an apocalyptic number.

It is an amenable number.

57126365640 is an abundant number, since it is smaller than the sum of its proper divisors (133294856760).

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

57126365640 is a wasteful number, since it uses less digits than its factorization.

57126365640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52894803 (or 52894793 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 57126365640 in words is "fifty-seven billion, one hundred twenty-six million, three hundred sixty-five thousand, six hundred forty".