257814769388 has 12 divisors (see below), whose sum is σ = 492191832552. Its totient is φ = 117188531520.

The previous prime is 257814769363. The next prime is 257814769393. The reversal of 257814769388 is 883967418752.

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, 2929713245 + ... + 2929713332.

It is an arithmetic number, because the mean of its divisors is an integer number (41015986046).

Almost surely, 2^257814769388 is an apocalyptic number.

It is an amenable number.

257814769388 is a deficient number, since it is larger than the sum of its proper divisors (234377063164).

257814769388 is a wasteful number, since it uses less digits than its factorization.

257814769388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5859426592 (or 5859426590 counting only the distinct ones).

The product of its digits is 162570240, while the sum is 68.

The spelling of 257814769388 in words is "two hundred fifty-seven billion, eight hundred fourteen million, seven hundred sixty-nine thousand, three hundred eighty-eight".