268146960282689 has 2 divisors, whose sum is σ = 268146960282690. Its totient is φ = 268146960282688.

The previous prime is 268146960282629. The next prime is 268146960282697. The reversal of 268146960282689 is 986282069641862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137713041414400 + 130433918868289 = 11735120^2 + 11420767^2 .

It is a cyclic number.

It is not a de Polignac number, because 268146960282689 - 2⁴⁴ = 250554774238273 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (268146960282629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134073480141344 + 134073480141345.

It is an arithmetic number, because the mean of its divisors is an integer number (134073480141345).

Almost surely, 2^{268146960282689} is an apocalyptic number.

It is an amenable number.

268146960282689 is a deficient number, since it is larger than the sum of its proper divisors (1).

268146960282689 is an equidigital number, since it uses as much as digits as its factorization.

268146960282689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1719926784, while the sum is 77.

The spelling of 268146960282689 in words is "two hundred sixty-eight trillion, one hundred forty-six billion, nine hundred sixty million, two hundred eighty-two thousand, six hundred eighty-nine".