257343540304 has 40 divisors (see below), whose sum is σ = 528531082560. Its totient is φ = 120965580288.

The previous prime is 257343540227. The next prime is 257343540331. The reversal of 257343540304 is 403045343752.

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, 295564 + ... + 775915.

It is an arithmetic number, because the mean of its divisors is an integer number (13213277064).

Almost surely, 2^257343540304 is an apocalyptic number.

It is an amenable number.

257343540304 is an abundant number, since it is smaller than the sum of its proper divisors (271187542256).

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

257343540304 is a wasteful number, since it uses less digits than its factorization.

257343540304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072387 (or 1072381 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 40.

The spelling of 257343540304 in words is "two hundred fifty-seven billion, three hundred forty-three million, five hundred forty thousand, three hundred four".