257208745160608 has 24 divisors (see below), whose sum is σ = 507411040318560. Its totient is φ = 128342449206720.

The previous prime is 257208745160557. The next prime is 257208745160611. The reversal of 257208745160608 is 806061547802752.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors.

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, 8185089468 + ... + 8185120891.

It is an arithmetic number, because the mean of its divisors is an integer number (21142126679940).

Almost surely, 2^{257208745160608} is an apocalyptic number.

It is an amenable number.

257208745160608 is a deficient number, since it is larger than the sum of its proper divisors (250202295157952).

257208745160608 is a wasteful number, since it uses less digits than its factorization.

257208745160608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16370210860 (or 16370210852 counting only the distinct ones).

The product of its (nonzero) digits is 45158400, while the sum is 61.

The spelling of 257208745160608 in words is "two hundred fifty-seven trillion, two hundred eight billion, seven hundred forty-five million, one hundred sixty thousand, six hundred eight".