57428251881 has 64 divisors (see below), whose sum is σ = 103210039296. Its totient is φ = 27430502400.

The previous prime is 57428251877. The next prime is 57428251883. The reversal of 57428251881 is 18815282475.

It is not a de Polignac number, because 57428251881 - 2² = 57428251877 is a prime.

It is a super-2 number, since 2×57428251881² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (57428251883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 734566 + ... + 808976.

It is an arithmetic number, because the mean of its divisors is an integer number (1612656864).

Almost surely, 2^57428251881 is an apocalyptic number.

It is an amenable number.

57428251881 is a deficient number, since it is larger than the sum of its proper divisors (45781787415).

57428251881 is a wasteful number, since it uses less digits than its factorization.

57428251881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74702.

The product of its digits is 1433600, while the sum is 51.

The spelling of 57428251881 in words is "fifty-seven billion, four hundred twenty-eight million, two hundred fifty-one thousand, eight hundred eighty-one".