255517019311 has 2 divisors, whose sum is σ = 255517019312. Its totient is φ = 255517019310.

The previous prime is 255517019299. The next prime is 255517019323. The reversal of 255517019311 is 113910715552.

It is a balanced prime because it is at equal distance from previous prime (255517019299) and next prime (255517019323).

It is a cyclic number.

It is not a de Polignac number, because 255517019311 - 2⁷ = 255517019183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255517019411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127758509655 + 127758509656.

It is an arithmetic number, because the mean of its divisors is an integer number (127758509656).

Almost surely, 2^255517019311 is an apocalyptic number.

255517019311 is a deficient number, since it is larger than the sum of its proper divisors (1).

255517019311 is an equidigital number, since it uses as much as digits as its factorization.

255517019311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47250, while the sum is 40.

The spelling of 255517019311 in words is "two hundred fifty-five billion, five hundred seventeen million, nineteen thousand, three hundred eleven".