257668310802 has 16 divisors (see below), whose sum is σ = 588956139072. Its totient is φ = 73619517360.

The previous prime is 257668310791. The next prime is 257668310821. The reversal of 257668310802 is 208013866752.

257668310802 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 3067479849 + ... + 3067479932.

It is an arithmetic number, because the mean of its divisors is an integer number (36809758692).

Almost surely, 2^257668310802 is an apocalyptic number.

257668310802 is an abundant number, since it is smaller than the sum of its proper divisors (331287828270).

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

257668310802 is a wasteful number, since it uses less digits than its factorization.

257668310802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6134959793.

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 257668310802 in words is "two hundred fifty-seven billion, six hundred sixty-eight million, three hundred ten thousand, eight hundred two".