255751372777 has 2 divisors, whose sum is σ = 255751372778. Its totient is φ = 255751372776.

The previous prime is 255751372739. The next prime is 255751372819. The reversal of 255751372777 is 777273157552.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 232675028496 + 23076344281 = 482364^2 + 151909^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255751372777 is a prime.

It is not a weakly prime, because it can be changed into another prime (255751322777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127875686388 + 127875686389.

It is an arithmetic number, because the mean of its divisors is an integer number (127875686389).

Almost surely, 2^255751372777 is an apocalyptic number.

It is an amenable number.

255751372777 is a deficient number, since it is larger than the sum of its proper divisors (1).

255751372777 is an equidigital number, since it uses as much as digits as its factorization.

255751372777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25210500, while the sum is 58.

The spelling of 255751372777 in words is "two hundred fifty-five billion, seven hundred fifty-one million, three hundred seventy-two thousand, seven hundred seventy-seven".