255406401967 has 2 divisors, whose sum is σ = 255406401968. Its totient is φ = 255406401966.

The previous prime is 255406401947. The next prime is 255406401989. The reversal of 255406401967 is 769104604552.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255406401967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 255406401967.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255406401947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127703200983 + 127703200984.

It is an arithmetic number, because the mean of its divisors is an integer number (127703200984).

Almost surely, 2^255406401967 is an apocalyptic number.

255406401967 is a deficient number, since it is larger than the sum of its proper divisors (1).

255406401967 is an equidigital number, since it uses as much as digits as its factorization.

255406401967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1814400, while the sum is 49.

The spelling of 255406401967 in words is "two hundred fifty-five billion, four hundred six million, four hundred one thousand, nine hundred sixty-seven".