256633446967 has 2 divisors, whose sum is σ = 256633446968. Its totient is φ = 256633446966.

The previous prime is 256633446931. The next prime is 256633446991. The reversal of 256633446967 is 769644336652.

256633446967 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256633446967 is a prime.

It is a super-2 number, since 2×256633446967² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256633446467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128316723483 + 128316723484.

It is an arithmetic number, because the mean of its divisors is an integer number (128316723484).

Almost surely, 2^256633446967 is an apocalyptic number.

256633446967 is a deficient number, since it is larger than the sum of its proper divisors (1).

256633446967 is an equidigital number, since it uses as much as digits as its factorization.

256633446967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 117573120, while the sum is 61.

The spelling of 256633446967 in words is "two hundred fifty-six billion, six hundred thirty-three million, four hundred forty-six thousand, nine hundred sixty-seven".