257944531848 has 64 divisors (see below), whose sum is σ = 679958496000. Its totient is φ = 81317316672.

The previous prime is 257944531787. The next prime is 257944531861. The reversal of 257944531848 is 848135449752.

It is a junction number, because it is equal to n+sod(n) for n = 257944531791 and 257944531800.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214158 + ... + 749501.

It is an arithmetic number, because the mean of its divisors is an integer number (10624351500).

Almost surely, 2^257944531848 is an apocalyptic number.

It is an amenable number.

257944531848 is an abundant number, since it is smaller than the sum of its proper divisors (422013964152).

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

257944531848 is a wasteful number, since it uses less digits than its factorization.

257944531848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964274 (or 964270 counting only the distinct ones).

The product of its digits is 38707200, while the sum is 60.

The spelling of 257944531848 in words is "two hundred fifty-seven billion, nine hundred forty-four million, five hundred thirty-one thousand, eight hundred forty-eight".