255816767747 has 2 divisors, whose sum is σ = 255816767748. Its totient is φ = 255816767746.

The previous prime is 255816767699. The next prime is 255816767753. The reversal of 255816767747 is 747767618552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255816767747 - 2⁸ = 255816767491 is a prime.

It is not a weakly prime, because it can be changed into another prime (255816767797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127908383873 + 127908383874.

It is an arithmetic number, because the mean of its divisors is an integer number (127908383874).

Almost surely, 2^255816767747 is an apocalyptic number.

255816767747 is a deficient number, since it is larger than the sum of its proper divisors (1).

255816767747 is an equidigital number, since it uses as much as digits as its factorization.

255816767747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138297600, while the sum is 65.

The spelling of 255816767747 in words is "two hundred fifty-five billion, eight hundred sixteen million, seven hundred sixty-seven thousand, seven hundred forty-seven".