257336416956 has 12 divisors (see below), whose sum is σ = 600451639592. Its totient is φ = 85778805648.

The previous prime is 257336416937. The next prime is 257336416957. The reversal of 257336416956 is 659614633752.

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

It is a junction number, because it is equal to n+sod(n) for n = 257336416896 and 257336416905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257336416957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10722350695 + ... + 10722350718.

Almost surely, 2^257336416956 is an apocalyptic number.

It is an amenable number.

257336416956 is an abundant number, since it is smaller than the sum of its proper divisors (343115222636).

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

257336416956 is a wasteful number, since it uses less digits than its factorization.

257336416956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21444701420 (or 21444701418 counting only the distinct ones).

The product of its digits is 24494400, while the sum is 57.

The spelling of 257336416956 in words is "two hundred fifty-seven billion, three hundred thirty-six million, four hundred sixteen thousand, nine hundred fifty-six".