257028487976 has 64 divisors (see below), whose sum is σ = 523573545600. Its totient is φ = 117587720448.

The previous prime is 257028487913. The next prime is 257028487987. The reversal of 257028487976 is 679784820752.

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, 5382461 + ... + 5430003.

It is an arithmetic number, because the mean of its divisors is an integer number (8180836650).

Almost surely, 2^257028487976 is an apocalyptic number.

257028487976 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

257028487976 is an abundant number, since it is smaller than the sum of its proper divisors (266545057624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257028487976 is a wasteful number, since it uses less digits than its factorization.

257028487976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48018 (or 48014 counting only the distinct ones).

The product of its (nonzero) digits is 94832640, while the sum is 65.

The spelling of 257028487976 in words is "two hundred fifty-seven billion, twenty-eight million, four hundred eighty-seven thousand, nine hundred seventy-six".