255549949013 has 2 divisors, whose sum is σ = 255549949014. Its totient is φ = 255549949012.

The previous prime is 255549948919. The next prime is 255549949043. The reversal of 255549949013 is 310949945552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227163764689 + 28386184324 = 476617^2 + 168482^2 .

It is a cyclic number.

It is not a de Polignac number, because 255549949013 - 2¹⁴ = 255549932629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 255549949013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255549949043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127774974506 + 127774974507.

It is an arithmetic number, because the mean of its divisors is an integer number (127774974507).

Almost surely, 2^255549949013 is an apocalyptic number.

It is an amenable number.

255549949013 is a deficient number, since it is larger than the sum of its proper divisors (1).

255549949013 is an equidigital number, since it uses as much as digits as its factorization.

255549949013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748000, while the sum is 56.

The spelling of 255549949013 in words is "two hundred fifty-five billion, five hundred forty-nine million, nine hundred forty-nine thousand, thirteen".