268240357417 has 2 divisors, whose sum is σ = 268240357418. Its totient is φ = 268240357416.

The previous prime is 268240357337. The next prime is 268240357439. The reversal of 268240357417 is 714753042862.

268240357417 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., 235136738281 + 33103619136 = 484909^2 + 181944^2 .

It is a cyclic number.

It is not a de Polignac number, because 268240357417 - 2²⁷ = 268106139689 is a prime.

It is not a weakly prime, because it can be changed into another prime (268240357447) 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, 134120178708 + 134120178709.

It is an arithmetic number, because the mean of its divisors is an integer number (134120178709).

Almost surely, 2^268240357417 is an apocalyptic number.

It is an amenable number.

268240357417 is a deficient number, since it is larger than the sum of its proper divisors (1).

268240357417 is an equidigital number, since it uses as much as digits as its factorization.

268240357417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2257920, while the sum is 49.

The spelling of 268240357417 in words is "two hundred sixty-eight billion, two hundred forty million, three hundred fifty-seven thousand, four hundred seventeen".