57128657523 has 16 divisors (see below), whose sum is σ = 87738654720. Its totient is φ = 32387898816.

The previous prime is 57128657473. The next prime is 57128657567. The reversal of 57128657523 is 32575682175.

It is a happy number.

It is not a de Polignac number, because 57128657523 - 2⁶ = 57128657459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57128656523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10707618 + ... + 10712951.

It is an arithmetic number, because the mean of its divisors is an integer number (5483665920).

Almost surely, 2^57128657523 is an apocalyptic number.

57128657523 is a deficient number, since it is larger than the sum of its proper divisors (30609997197).

57128657523 is a wasteful number, since it uses less digits than its factorization.

57128657523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21420706.

The product of its digits is 3528000, while the sum is 51.

The spelling of 57128657523 in words is "fifty-seven billion, one hundred twenty-eight million, six hundred fifty-seven thousand, five hundred twenty-three".