257440314764 has 6 divisors (see below), whose sum is σ = 450520550844. Its totient is φ = 128720157380.

The previous prime is 257440314727. The next prime is 257440314799. The reversal of 257440314764 is 467413044752.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32180039342 + ... + 32180039349.

It is an arithmetic number, because the mean of its divisors is an integer number (75086758474).

Almost surely, 2^257440314764 is an apocalyptic number.

It is an amenable number.

257440314764 is a deficient number, since it is larger than the sum of its proper divisors (193080236080).

257440314764 is a wasteful number, since it uses less digits than its factorization.

257440314764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64360078695 (or 64360078693 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 47.

The spelling of 257440314764 in words is "two hundred fifty-seven billion, four hundred forty million, three hundred fourteen thousand, seven hundred sixty-four".