257339530824 has 16 divisors (see below), whose sum is σ = 643348827120. Its totient is φ = 85779843600.

The previous prime is 257339530807. The next prime is 257339530831. The reversal of 257339530824 is 428035933752.

It is a super-2 number, since 2×257339530824² (a number of 24 digits) contains 22 as substring.

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, 5361240202 + ... + 5361240249.

It is an arithmetic number, because the mean of its divisors is an integer number (40209301695).

Almost surely, 2^257339530824 is an apocalyptic number.

257339530824 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

257339530824 is an abundant number, since it is smaller than the sum of its proper divisors (386009296296).

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

257339530824 is a wasteful number, since it uses less digits than its factorization.

257339530824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10722480460 (or 10722480456 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 51.

The spelling of 257339530824 in words is "two hundred fifty-seven billion, three hundred thirty-nine million, five hundred thirty thousand, eight hundred twenty-four".