257509028824 has 16 divisors (see below), whose sum is σ = 483134461920. Its totient is φ = 128673172320.

The previous prime is 257509028789. The next prime is 257509028837. The reversal of 257509028824 is 428820905752.

It is a congruent 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, 10154307 + ... + 10179634.

It is an arithmetic number, because the mean of its divisors is an integer number (30195903870).

Almost surely, 2^257509028824 is an apocalyptic number.

It is an amenable number.

257509028824 is a deficient number, since it is larger than the sum of its proper divisors (225625433096).

257509028824 is a wasteful number, since it uses less digits than its factorization.

257509028824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20335530 (or 20335526 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 52.

The spelling of 257509028824 in words is "two hundred fifty-seven billion, five hundred nine million, twenty-eight thousand, eight hundred twenty-four".