257944264512 has 56 divisors (see below), whose sum is σ = 744520951392. Its totient is φ = 78164928000.

The previous prime is 257944264481. The next prime is 257944264531. The reversal of 257944264512 is 215462449752.

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, 61064239 + ... + 61068462.

Almost surely, 2^257944264512 is an apocalyptic number.

257944264512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

257944264512 is an abundant number, since it is smaller than the sum of its proper divisors (486576686880).

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

257944264512 is a wasteful number, since it uses less digits than its factorization.

257944264512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122132727 (or 122132717 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 51.

The spelling of 257944264512 in words is "two hundred fifty-seven billion, nine hundred forty-four million, two hundred sixty-four thousand, five hundred twelve".