255858164867 has 2 divisors, whose sum is σ = 255858164868. Its totient is φ = 255858164866.

The previous prime is 255858164839. The next prime is 255858164893. The reversal of 255858164867 is 768461858552.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255858164867 - 2²⁴ = 255841387651 is a prime.

It is not a weakly prime, because it can be changed into another prime (255858164767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127929082433 + 127929082434.

It is an arithmetic number, because the mean of its divisors is an integer number (127929082434).

Almost surely, 2^255858164867 is an apocalyptic number.

255858164867 is a deficient number, since it is larger than the sum of its proper divisors (1).

255858164867 is an equidigital number, since it uses as much as digits as its factorization.

255858164867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024000, while the sum is 65.

The spelling of 255858164867 in words is "two hundred fifty-five billion, eight hundred fifty-eight million, one hundred sixty-four thousand, eight hundred sixty-seven".