255891373679 has 2 divisors, whose sum is σ = 255891373680. Its totient is φ = 255891373678.

The previous prime is 255891373667. The next prime is 255891373729. The reversal of 255891373679 is 976373198552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255891373679 - 2⁴ = 255891373663 is a prime.

It is a super-2 number, since 2×255891373679² (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 (255891373649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127945686839 + 127945686840.

It is an arithmetic number, because the mean of its divisors is an integer number (127945686840).

Almost surely, 2^255891373679 is an apocalyptic number.

255891373679 is a deficient number, since it is larger than the sum of its proper divisors (1).

255891373679 is an equidigital number, since it uses as much as digits as its factorization.

255891373679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 85730400, while the sum is 65.

The spelling of 255891373679 in words is "two hundred fifty-five billion, eight hundred ninety-one million, three hundred seventy-three thousand, six hundred seventy-nine".