255679157137 has 2 divisors, whose sum is σ = 255679157138. Its totient is φ = 255679157136.

The previous prime is 255679157099. The next prime is 255679157161. The reversal of 255679157137 is 731751976552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 175694267281 + 79984889856 = 419159^2 + 282816^2 .

It is a cyclic number.

It is not a de Polignac number, because 255679157137 - 2⁷ = 255679157009 is a prime.

It is not a weakly prime, because it can be changed into another prime (255679157177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127839578568 + 127839578569.

It is an arithmetic number, because the mean of its divisors is an integer number (127839578569).

Almost surely, 2^255679157137 is an apocalyptic number.

It is an amenable number.

255679157137 is a deficient number, since it is larger than the sum of its proper divisors (1).

255679157137 is an equidigital number, since it uses as much as digits as its factorization.

255679157137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13891500, while the sum is 58.

The spelling of 255679157137 in words is "two hundred fifty-five billion, six hundred seventy-nine million, one hundred fifty-seven thousand, one hundred thirty-seven".