255717403937 has 2 divisors, whose sum is σ = 255717403938. Its totient is φ = 255717403936.

The previous prime is 255717403897. The next prime is 255717403951. The reversal of 255717403937 is 739304717552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 255708216976 + 9186961 = 505676^2 + 3031^2 .

It is a cyclic number.

It is not a de Polignac number, because 255717403937 - 2¹² = 255717399841 is a prime.

It is not a weakly prime, because it can be changed into another prime (255717403237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127858701968 + 127858701969.

It is an arithmetic number, because the mean of its divisors is an integer number (127858701969).

Almost surely, 2^255717403937 is an apocalyptic number.

It is an amenable number.

255717403937 is a deficient number, since it is larger than the sum of its proper divisors (1).

255717403937 is an equidigital number, since it uses as much as digits as its factorization.

255717403937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5556600, while the sum is 53.

The spelling of 255717403937 in words is "two hundred fifty-five billion, seven hundred seventeen million, four hundred three thousand, nine hundred thirty-seven".