57128648865 has 16 divisors (see below), whose sum is σ = 91435219200. Its totient is φ = 30458819072.

The previous prime is 57128648813. The next prime is 57128648879. The reversal of 57128648865 is 56884682175.

It is a cyclic number.

It is not a de Polignac number, because 57128648865 - 2⁸ = 57128648609 is a prime.

It is a super-2 number, since 2×57128648865² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 57128648799 and 57128648808.

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, 563760 + ... + 657329.

It is an arithmetic number, because the mean of its divisors is an integer number (5714701200).

Almost surely, 2^57128648865 is an apocalyptic number.

It is an amenable number.

57128648865 is a deficient number, since it is larger than the sum of its proper divisors (34306570335).

57128648865 is a wasteful number, since it uses less digits than its factorization.

57128648865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224216.

The product of its digits is 25804800, while the sum is 60.

The spelling of 57128648865 in words is "fifty-seven billion, one hundred twenty-eight million, six hundred forty-eight thousand, eight hundred sixty-five".