257599991082 has 16 divisors (see below), whose sum is σ = 588799979712. Its totient is φ = 73599997440.

The previous prime is 257599991069. The next prime is 257599991137. The reversal of 257599991082 is 280199995752.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3066666519 + ... + 3066666602.

It is an arithmetic number, because the mean of its divisors is an integer number (36799998732).

Almost surely, 2^257599991082 is an apocalyptic number.

257599991082 is an abundant number, since it is smaller than the sum of its proper divisors (331199988630).

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

257599991082 is a wasteful number, since it uses less digits than its factorization.

257599991082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6133333133.

The product of its (nonzero) digits is 36741600, while the sum is 66.

The spelling of 257599991082 in words is "two hundred fifty-seven billion, five hundred ninety-nine million, nine hundred ninety-one thousand, eighty-two".