268446812149 has 2 divisors, whose sum is σ = 268446812150. Its totient is φ = 268446812148.

The previous prime is 268446812111. The next prime is 268446812189. The reversal of 268446812149 is 941218644862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181535644900 + 86911167249 = 426070^2 + 294807^2 .

It is a cyclic number.

It is not a de Polignac number, because 268446812149 - 2⁹ = 268446811637 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 268446812149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268446812189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134223406074 + 134223406075.

It is an arithmetic number, because the mean of its divisors is an integer number (134223406075).

Almost surely, 2^268446812149 is an apocalyptic number.

It is an amenable number.

268446812149 is a deficient number, since it is larger than the sum of its proper divisors (1).

268446812149 is an equidigital number, since it uses as much as digits as its factorization.

268446812149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5308416, while the sum is 55.

The spelling of 268446812149 in words is "two hundred sixty-eight billion, four hundred forty-six million, eight hundred twelve thousand, one hundred forty-nine".