257538278766164 has 48 divisors (see below), whose sum is σ = 497593642613760. Its totient is φ = 115651065135840.

The previous prime is 257538278766151. The next prime is 257538278766191. The reversal of 257538278766164 is 461667872835752.

It is a congruent number.

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, 340218407 + ... + 340974545.

It is an arithmetic number, because the mean of its divisors is an integer number (10366534221120).

Almost surely, 2^{257538278766164} is an apocalyptic number.

It is an amenable number.

257538278766164 is a deficient number, since it is larger than the sum of its proper divisors (240055363847596).

257538278766164 is a wasteful number, since it uses less digits than its factorization.

257538278766164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849500 (or 849498 counting only the distinct ones).

The product of its digits is 5689958400, while the sum is 77.

The spelling of 257538278766164 in words is "two hundred fifty-seven trillion, five hundred thirty-eight billion, two hundred seventy-eight million, seven hundred sixty-six thousand, one hundred sixty-four".