255877060391 has 2 divisors, whose sum is σ = 255877060392. Its totient is φ = 255877060390.

The previous prime is 255877060337. The next prime is 255877060427. The reversal of 255877060391 is 193060778552.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255877060391 is a prime.

It is a super-2 number, since 2×255877060391² (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 (255877060321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127938530195 + 127938530196.

It is an arithmetic number, because the mean of its divisors is an integer number (127938530196).

Almost surely, 2^255877060391 is an apocalyptic number.

255877060391 is a deficient number, since it is larger than the sum of its proper divisors (1).

255877060391 is an equidigital number, since it uses as much as digits as its factorization.

255877060391 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 53.

The spelling of 255877060391 in words is "two hundred fifty-five billion, eight hundred seventy-seven million, sixty thousand, three hundred ninety-one".