8668142759 has 2 divisors, whose sum is σ = 8668142760. Its totient is φ = 8668142758.

The previous prime is 8668142737. The next prime is 8668142789. The reversal of 8668142759 is 9572418668.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8668142759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8668142719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4334071379 + 4334071380.

It is an arithmetic number, because the mean of its divisors is an integer number (4334071380).

Almost surely, 2^8668142759 is an apocalyptic number.

8668142759 is a deficient number, since it is larger than the sum of its proper divisors (1).

8668142759 is an equidigital number, since it uses as much as digits as its factorization.

8668142759 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5806080, while the sum is 56.

The square root of 8668142759 is about 93102.8611751540. The cubic root of 8668142759 is about 2054.1966584687.

The spelling of 8668142759 in words is "eight billion, six hundred sixty-eight million, one hundred forty-two thousand, seven hundred fifty-nine".