257071369264 has 20 divisors (see below), whose sum is σ = 498285921400. Its totient is φ = 128481454080.

The previous prime is 257071369241. The next prime is 257071369271. The reversal of 257071369264 is 462963170752.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3350289 + ... + 3426160.

It is an arithmetic number, because the mean of its divisors is an integer number (24914296070).

Almost surely, 2^257071369264 is an apocalyptic number.

It is an amenable number.

257071369264 is a deficient number, since it is larger than the sum of its proper divisors (241214552136).

257071369264 is a wasteful number, since it uses less digits than its factorization.

257071369264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6778828 (or 6778822 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 52.

The spelling of 257071369264 in words is "two hundred fifty-seven billion, seventy-one million, three hundred sixty-nine thousand, two hundred sixty-four".