257856250020168 has 32 divisors (see below), whose sum is σ = 644661158852160. Its totient is φ = 85949345499840.

The previous prime is 257856250020167. The next prime is 257856250020179. The reversal of 257856250020168 is 861020052658752.

It is not an unprimeable number, because it can be changed into a prime (257856250020167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170345788 + ... + 171852843.

It is an arithmetic number, because the mean of its divisors is an integer number (20145661214130).

Almost surely, 2^{257856250020168} is an apocalyptic number.

It is an amenable number.

257856250020168 is an abundant number, since it is smaller than the sum of its proper divisors (386804908831992).

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

257856250020168 is a wasteful number, since it uses less digits than its factorization.

257856250020168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342230037 (or 342230033 counting only the distinct ones).

The product of its (nonzero) digits is 16128000, while the sum is 57.

The spelling of 257856250020168 in words is "two hundred fifty-seven trillion, eight hundred fifty-six billion, two hundred fifty million, twenty thousand, one hundred sixty-eight".