255517019323 has 2 divisors, whose sum is σ = 255517019324. Its totient is φ = 255517019322.

The previous prime is 255517019311. The next prime is 255517019333. The reversal of 255517019323 is 323910715552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255517019323 - 2⁵ = 255517019291 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 255517019323.

It is not a weakly prime, because it can be changed into another prime (255517019333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127758509661 + 127758509662.

It is an arithmetic number, because the mean of its divisors is an integer number (127758509662).

Almost surely, 2^255517019323 is an apocalyptic number.

255517019323 is a deficient number, since it is larger than the sum of its proper divisors (1).

255517019323 is an equidigital number, since it uses as much as digits as its factorization.

255517019323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 283500, while the sum is 43.

The spelling of 255517019323 in words is "two hundred fifty-five billion, five hundred seventeen million, nineteen thousand, three hundred twenty-three".