256541907067 has 2 divisors, whose sum is σ = 256541907068. Its totient is φ = 256541907066.

The previous prime is 256541907007. The next prime is 256541907131. The reversal of 256541907067 is 760709145652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256541907067 - 2²⁷ = 256407689339 is a prime.

It is not a weakly prime, because it can be changed into another prime (256541907007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128270953533 + 128270953534.

It is an arithmetic number, because the mean of its divisors is an integer number (128270953534).

Almost surely, 2^256541907067 is an apocalyptic number.

256541907067 is a deficient number, since it is larger than the sum of its proper divisors (1).

256541907067 is an equidigital number, since it uses as much as digits as its factorization.

256541907067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3175200, while the sum is 52.

The spelling of 256541907067 in words is "two hundred fifty-six billion, five hundred forty-one million, nine hundred seven thousand, sixty-seven".