255774728899 has 2 divisors, whose sum is σ = 255774728900. Its totient is φ = 255774728898.

The previous prime is 255774728843. The next prime is 255774728921. The reversal of 255774728899 is 998827477552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255774728899 - 2⁹ = 255774728387 is a prime.

It is not a weakly prime, because it can be changed into another prime (255774728299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127887364449 + 127887364450.

It is an arithmetic number, because the mean of its divisors is an integer number (127887364450).

Almost surely, 2^255774728899 is an apocalyptic number.

255774728899 is a deficient number, since it is larger than the sum of its proper divisors (1).

255774728899 is an equidigital number, since it uses as much as digits as its factorization.

255774728899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 711244800, while the sum is 73.

The spelling of 255774728899 in words is "two hundred fifty-five billion, seven hundred seventy-four million, seven hundred twenty-eight thousand, eight hundred ninety-nine".