57128457872 has 10 divisors (see below), whose sum is σ = 110686387158. Its totient is φ = 28564228928.

The previous prime is 57128457871. The next prime is 57128457887. The reversal of 57128457872 is 27875482175.

It can be written as a sum of positive squares in only one way, i.e., 33110897296 + 24017560576 = 181964^2 + 154976^2 .

It is not an unprimeable number, because it can be changed into a prime (57128457871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1785264293 + ... + 1785264324.

Almost surely, 2^57128457872 is an apocalyptic number.

It is an amenable number.

57128457872 is a deficient number, since it is larger than the sum of its proper divisors (53557929286).

57128457872 is a wasteful number, since it uses less digits than its factorization.

57128457872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3570528625 (or 3570528619 counting only the distinct ones).

The product of its digits is 8780800, while the sum is 56.

The spelling of 57128457872 in words is "fifty-seven billion, one hundred twenty-eight million, four hundred fifty-seven thousand, eight hundred seventy-two".