268108444913 has 2 divisors, whose sum is σ = 268108444914. Its totient is φ = 268108444912.

The previous prime is 268108444853. The next prime is 268108444957. The reversal of 268108444913 is 319444801862.

268108444913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158410368064 + 109698076849 = 398008^2 + 331207^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268108444913 is a prime.

It is not a weakly prime, because it can be changed into another prime (268108444963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134054222456 + 134054222457.

It is an arithmetic number, because the mean of its divisors is an integer number (134054222457).

Almost surely, 2^268108444913 is an apocalyptic number.

It is an amenable number.

268108444913 is a deficient number, since it is larger than the sum of its proper divisors (1).

268108444913 is an equidigital number, since it uses as much as digits as its factorization.

268108444913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1327104, while the sum is 50.

The spelling of 268108444913 in words is "two hundred sixty-eight billion, one hundred eight million, four hundred forty-four thousand, nine hundred thirteen".