257008388382 has 24 divisors (see below), whose sum is σ = 557781166800. Its totient is φ = 85526438400.

The previous prime is 257008388369. The next prime is 257008388393. The reversal of 257008388382 is 283883800752.

It is a happy number.

257008388382 is a `hidden beast` number, since 2 + 570 + 0 + 8 + 38 + 8 + 38 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11907619 + ... + 11929182.

It is an arithmetic number, because the mean of its divisors is an integer number (23240881950).

Almost surely, 2^257008388382 is an apocalyptic number.

257008388382 is an abundant number, since it is smaller than the sum of its proper divisors (300772778418).

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

257008388382 is a wasteful number, since it uses less digits than its factorization.

257008388382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23837408 (or 23837405 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 54.

The spelling of 257008388382 in words is "two hundred fifty-seven billion, eight million, three hundred eighty-eight thousand, three hundred eighty-two".