256057673706 has 12 divisors (see below), whose sum is σ = 554791626402. Its totient is φ = 85352557896.

The previous prime is 256057673699. The next prime is 256057673719. The reversal of 256057673706 is 607376750652.

256057673706 is a `hidden beast` number, since 2 + 5 + 60 + 576 + 7 + 3 + 7 + 0 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 246056673681 + 10001000025 = 496041^2 + 100005^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7112713141 + ... + 7112713176.

Almost surely, 2^256057673706 is an apocalyptic number.

256057673706 is an abundant number, since it is smaller than the sum of its proper divisors (298733952696).

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

256057673706 is a wasteful number, since it uses less digits than its factorization.

256057673706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14225426325 (or 14225426322 counting only the distinct ones).

The product of its (nonzero) digits is 11113200, while the sum is 54.

The spelling of 256057673706 in words is "two hundred fifty-six billion, fifty-seven million, six hundred seventy-three thousand, seven hundred six".