256346360667 has 12 divisors (see below), whose sum is σ = 370282690440. Its totient is φ = 170895444288.

The previous prime is 256346360657. The next prime is 256346360723. The reversal of 256346360667 is 766063643652.

256346360667 is a `hidden beast` number, since 2 + 5 + 63 + 463 + 60 + 6 + 67 = 666.

It is not a de Polignac number, because 256346360667 - 2⁴ = 256346360651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256346360657) 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, 987328 + ... + 1219634.

It is an arithmetic number, because the mean of its divisors is an integer number (30856890870).

Almost surely, 2^256346360667 is an apocalyptic number.

256346360667 is a deficient number, since it is larger than the sum of its proper divisors (113936329773).

256346360667 is a wasteful number, since it uses less digits than its factorization.

256346360667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354922 (or 354919 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 54.

The spelling of 256346360667 in words is "two hundred fifty-six billion, three hundred forty-six million, three hundred sixty thousand, six hundred sixty-seven".