256733454035167 has 2 divisors, whose sum is σ = 256733454035168. Its totient is φ = 256733454035166.

The previous prime is 256733454035131. The next prime is 256733454035209. The reversal of 256733454035167 is 761530454337652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256733454035167 - 2¹⁹ = 256733453510879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256733454035467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128366727017583 + 128366727017584.

It is an arithmetic number, because the mean of its divisors is an integer number (128366727017584).

Almost surely, 2^{256733454035167} is an apocalyptic number.

256733454035167 is a deficient number, since it is larger than the sum of its proper divisors (1).

256733454035167 is an equidigital number, since it uses as much as digits as its factorization.

256733454035167 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512000, while the sum is 61.

The spelling of 256733454035167 in words is "two hundred fifty-six trillion, seven hundred thirty-three billion, four hundred fifty-four million, thirty-five thousand, one hundred sixty-seven".