257404645374 has 16 divisors (see below), whose sum is σ = 514971883008. Its totient is φ = 85774449752.

The previous prime is 257404645339. The next prime is 257404645387. The reversal of 257404645374 is 473546404752.

It is a super-2 number, since 2×257404645374² (a number of 24 digits) contains 22 as substring.

It is a congruent 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, 6754092 + ... + 6792095.

It is an arithmetic number, because the mean of its divisors is an integer number (32185742688).

Almost surely, 2^257404645374 is an apocalyptic number.

257404645374 is an abundant number, since it is smaller than the sum of its proper divisors (257567237634).

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

257404645374 is a wasteful number, since it uses less digits than its factorization.

257404645374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13549359.

The product of its (nonzero) digits is 11289600, while the sum is 51.

The spelling of 257404645374 in words is "two hundred fifty-seven billion, four hundred four million, six hundred forty-five thousand, three hundred seventy-four".