268222063817 has 2 divisors, whose sum is σ = 268222063818. Its totient is φ = 268222063816.

The previous prime is 268222063801. The next prime is 268222063841. The reversal of 268222063817 is 718360222862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198471141001 + 69750922816 = 445501^2 + 264104^2 .

It is a cyclic number.

It is not a de Polignac number, because 268222063817 - 2⁴ = 268222063801 is a prime.

It is not a weakly prime, because it can be changed into another prime (268222063877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134111031908 + 134111031909.

It is an arithmetic number, because the mean of its divisors is an integer number (134111031909).

Almost surely, 2^268222063817 is an apocalyptic number.

It is an amenable number.

268222063817 is a deficient number, since it is larger than the sum of its proper divisors (1).

268222063817 is an equidigital number, since it uses as much as digits as its factorization.

268222063817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 774144, while the sum is 47.

The spelling of 268222063817 in words is "two hundred sixty-eight billion, two hundred twenty-two million, sixty-three thousand, eight hundred seventeen".