257599979474 has 16 divisors (see below), whose sum is σ = 386817039000. Its totient is φ = 128661041664.

The previous prime is 257599979443. The next prime is 257599979543. The reversal of 257599979474 is 474979995752.

It can be written as a sum of positive squares in 4 ways, for example, as 140733771025 + 116866208449 = 375145^2 + 341857^2 .

It is a junction number, because it is equal to n+sod(n) for n = 257599979395 and 257599979404.

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, 7656962 + ... + 7690530.

Almost surely, 2^257599979474 is an apocalyptic number.

257599979474 is a deficient number, since it is larger than the sum of its proper divisors (129217059526).

257599979474 is a wasteful number, since it uses less digits than its factorization.

257599979474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37597.

The product of its digits is 1800338400, while the sum is 77.

The spelling of 257599979474 in words is "two hundred fifty-seven billion, five hundred ninety-nine million, nine hundred seventy-nine thousand, four hundred seventy-four".