255508579873 has 2 divisors, whose sum is σ = 255508579874. Its totient is φ = 255508579872.

The previous prime is 255508579849. The next prime is 255508579891. The reversal of 255508579873 is 378975805552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241191978769 + 14316601104 = 491113^2 + 119652^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255508579873 is a prime.

It is a super-2 number, since 2×255508579873² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (255508579273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127754289936 + 127754289937.

It is an arithmetic number, because the mean of its divisors is an integer number (127754289937).

Almost surely, 2^255508579873 is an apocalyptic number.

It is an amenable number.

255508579873 is a deficient number, since it is larger than the sum of its proper divisors (1).

255508579873 is an equidigital number, since it uses as much as digits as its factorization.

255508579873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840000, while the sum is 64.

The spelling of 255508579873 in words is "two hundred fifty-five billion, five hundred eight million, five hundred seventy-nine thousand, eight hundred seventy-three".