257666911676 has 12 divisors (see below), whose sum is σ = 474649574280. Its totient is φ = 122052747600.

The previous prime is 257666911631. The next prime is 257666911717. The reversal of 257666911676 is 676119666752.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1695176975 + ... + 1695177126.

It is an arithmetic number, because the mean of its divisors is an integer number (39554131190).

Almost surely, 2^257666911676 is an apocalyptic number.

It is an amenable number.

257666911676 is a deficient number, since it is larger than the sum of its proper divisors (216982662604).

257666911676 is a wasteful number, since it uses less digits than its factorization.

257666911676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3390354124 (or 3390354122 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 62.

The spelling of 257666911676 in words is "two hundred fifty-seven billion, six hundred sixty-six million, nine hundred eleven thousand, six hundred seventy-six".