57128657522 has 16 divisors (see below), whose sum is σ = 90738192600. Its totient is φ = 26882757888.

The previous prime is 57128657473. The next prime is 57128657567. The reversal of 57128657522 is 22575682175.

It can be written as a sum of positive squares in 4 ways, for example, as 56568341281 + 560316241 = 237841^2 + 23671^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1260104 + ... + 1304652.

Almost surely, 2^57128657522 is an apocalyptic number.

57128657522 is a deficient number, since it is larger than the sum of its proper divisors (33609535078).

57128657522 is a wasteful number, since it uses less digits than its factorization.

57128657522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82285.

The product of its digits is 2352000, while the sum is 50.

The spelling of 57128657522 in words is "fifty-seven billion, one hundred twenty-eight million, six hundred fifty-seven thousand, five hundred twenty-two".