257197593036 has 12 divisors (see below), whose sum is σ = 600127717112. Its totient is φ = 85732531008.

The previous prime is 257197593013. The next prime is 257197593067. The reversal of 257197593036 is 630395791752.

It is a tau number, because it is divible by the number of its divisors (12).

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, 10716566365 + ... + 10716566388.

Almost surely, 2^257197593036 is an apocalyptic number.

It is an amenable number.

257197593036 is an abundant number, since it is smaller than the sum of its proper divisors (342930124076).

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

257197593036 is a wasteful number, since it uses less digits than its factorization.

257197593036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21433132760 (or 21433132758 counting only the distinct ones).

The product of its (nonzero) digits is 10716300, while the sum is 57.

The spelling of 257197593036 in words is "two hundred fifty-seven billion, one hundred ninety-seven million, five hundred ninety-three thousand, thirty-six".