255117635837 has 2 divisors, whose sum is σ = 255117635838. Its totient is φ = 255117635836.

The previous prime is 255117635813. The next prime is 255117635863. The reversal of 255117635837 is 738536711552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227404043161 + 27713592676 = 476869^2 + 166474^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255117635837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255117635807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127558817918 + 127558817919.

It is an arithmetic number, because the mean of its divisors is an integer number (127558817919).

Almost surely, 2^255117635837 is an apocalyptic number.

It is an amenable number.

255117635837 is a deficient number, since it is larger than the sum of its proper divisors (1).

255117635837 is an equidigital number, since it uses as much as digits as its factorization.

255117635837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5292000, while the sum is 53.

The spelling of 255117635837 in words is "two hundred fifty-five billion, one hundred seventeen million, six hundred thirty-five thousand, eight hundred thirty-seven".