255778027807 has 2 divisors, whose sum is σ = 255778027808. Its totient is φ = 255778027806.

The previous prime is 255778027777. The next prime is 255778027823. The reversal of 255778027807 is 708720877552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255778027807 - 2¹¹ = 255778025759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255778027207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127889013903 + 127889013904.

It is an arithmetic number, because the mean of its divisors is an integer number (127889013904).

Almost surely, 2^255778027807 is an apocalyptic number.

255778027807 is a deficient number, since it is larger than the sum of its proper divisors (1).

255778027807 is an equidigital number, since it uses as much as digits as its factorization.

255778027807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15366400, while the sum is 58.

The spelling of 255778027807 in words is "two hundred fifty-five billion, seven hundred seventy-eight million, twenty-seven thousand, eight hundred seven".