256867233417 has 12 divisors (see below), whose sum is σ = 371222617584. Its totient is φ = 171156128760.

The previous prime is 256867233391. The next prime is 256867233419. The reversal of 256867233417 is 714332768652.

It is a happy number.

256867233417 is a `hidden beast` number, since 2 + 56 + 86 + 72 + 33 + 417 = 666.

It is not a de Polignac number, because 256867233417 - 2⁷ = 256867233289 is a prime.

It is a super-2 number, since 2×256867233417² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (256867233419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7372783 + ... + 7407540.

It is an arithmetic number, because the mean of its divisors is an integer number (30935218132).

Almost surely, 2^256867233417 is an apocalyptic number.

It is an amenable number.

256867233417 is a deficient number, since it is larger than the sum of its proper divisors (114355384167).

256867233417 is a wasteful number, since it uses less digits than its factorization.

256867233417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14782260 (or 14782257 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 54.

The spelling of 256867233417 in words is "two hundred fifty-six billion, eight hundred sixty-seven million, two hundred thirty-three thousand, four hundred seventeen".