257978341924 has 48 divisors (see below), whose sum is σ = 463119148800. Its totient is φ = 125684040960.

The previous prime is 257978341919. The next prime is 257978341981. The reversal of 257978341924 is 429143879752.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60541954 + ... + 60546214.

It is an arithmetic number, because the mean of its divisors is an integer number (9648315600).

Almost surely, 2^257978341924 is an apocalyptic number.

It is an amenable number.

257978341924 is a deficient number, since it is larger than the sum of its proper divisors (205140806876).

257978341924 is a wasteful number, since it uses less digits than its factorization.

257978341924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5668 (or 5666 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 61.

The spelling of 257978341924 in words is "two hundred fifty-seven billion, nine hundred seventy-eight million, three hundred forty-one thousand, nine hundred twenty-four".