255355434002909 has 2 divisors, whose sum is σ = 255355434002910. Its totient is φ = 255355434002908.

The previous prime is 255355434002843. The next prime is 255355434003023. The reversal of 255355434002909 is 909200434553552.

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., 242791088880025 + 12564345122884 = 15581755^2 + 3544622^2 .

It is a cyclic number.

It is not a de Polignac number, because 255355434002909 - 2¹² = 255355433998813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255355434002209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127677717001454 + 127677717001455.

It is an arithmetic number, because the mean of its divisors is an integer number (127677717001455).

Almost surely, 2^{255355434002909} is an apocalyptic number.

It is an amenable number.

255355434002909 is a deficient number, since it is larger than the sum of its proper divisors (1).

255355434002909 is an equidigital number, since it uses as much as digits as its factorization.

255355434002909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160000, while the sum is 56.

The spelling of 255355434002909 in words is "two hundred fifty-five trillion, three hundred fifty-five billion, four hundred thirty-four million, two thousand, nine hundred nine".