255716269769 has 2 divisors, whose sum is σ = 255716269770. Its totient is φ = 255716269768.

The previous prime is 255716269763. The next prime is 255716269829. The reversal of 255716269769 is 967962617552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161292198544 + 94424071225 = 401612^2 + 307285^2 .

It is a cyclic number.

It is not a de Polignac number, because 255716269769 - 2²⁴ = 255699492553 is a prime.

It is a super-2 number, since 2×255716269769² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (255716269763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127858134884 + 127858134885.

It is an arithmetic number, because the mean of its divisors is an integer number (127858134885).

Almost surely, 2^255716269769 is an apocalyptic number.

It is an amenable number.

255716269769 is a deficient number, since it is larger than the sum of its proper divisors (1).

255716269769 is an equidigital number, since it uses as much as digits as its factorization.

255716269769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 85730400, while the sum is 65.

The spelling of 255716269769 in words is "two hundred fifty-five billion, seven hundred sixteen million, two hundred sixty-nine thousand, seven hundred sixty-nine".