68143375829 has 2 divisors, whose sum is σ = 68143375830. Its totient is φ = 68143375828.

The previous prime is 68143375801. The next prime is 68143375843. The reversal of 68143375829 is 92857334186.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67462270225 + 681105604 = 259735^2 + 26098^2 .

It is a cyclic number.

It is not a de Polignac number, because 68143375829 - 2¹² = 68143371733 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68143375129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34071687914 + 34071687915.

It is an arithmetic number, because the mean of its divisors is an integer number (34071687915).

Almost surely, 2^68143375829 is an apocalyptic number.

It is an amenable number.

68143375829 is a deficient number, since it is larger than the sum of its proper divisors (1).

68143375829 is an equidigital number, since it uses as much as digits as its factorization.

68143375829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8709120, while the sum is 56.

The spelling of 68143375829 in words is "sixty-eight billion, one hundred forty-three million, three hundred seventy-five thousand, eight hundred twenty-nine".