257834652136 has 64 divisors (see below), whose sum is σ = 499658644800. Its totient is φ = 124678310400.

The previous prime is 257834652077. The next prime is 257834652157. The reversal of 257834652136 is 631256438752.

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, 8531260 + ... + 8561428.

It is an arithmetic number, because the mean of its divisors is an integer number (7807166325).

Almost surely, 2^257834652136 is an apocalyptic number.

It is an amenable number.

257834652136 is a deficient number, since it is larger than the sum of its proper divisors (241823992664).

257834652136 is a wasteful number, since it uses less digits than its factorization.

257834652136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30530 (or 30526 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 52.

The spelling of 257834652136 in words is "two hundred fifty-seven billion, eight hundred thirty-four million, six hundred fifty-two thousand, one hundred thirty-six".