256000000667 has 2 divisors, whose sum is σ = 256000000668. Its totient is φ = 256000000666.

The previous prime is 256000000559. The next prime is 256000000681. The reversal of 256000000667 is 766000000652.

256000000667 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 not a de Polignac number, because 256000000667 - 2²⁶ = 255932891803 is a prime.

It is not a weakly prime, because it can be changed into another prime (256000000967) 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, 128000000333 + 128000000334.

It is an arithmetic number, because the mean of its divisors is an integer number (128000000334).

Almost surely, 2^256000000667 is an apocalyptic number.

256000000667 is a deficient number, since it is larger than the sum of its proper divisors (1).

256000000667 is an equidigital number, since it uses as much as digits as its factorization.

256000000667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 32.

The spelling of 256000000667 in words is "two hundred fifty-six billion, six hundred sixty-seven", and thus it is an aban number.