68309352439 has 2 divisors, whose sum is σ = 68309352440. Its totient is φ = 68309352438.

The previous prime is 68309352373. The next prime is 68309352457. The reversal of 68309352439 is 93425390386.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68309352439 - 2⁹ = 68309351927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68309352479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34154676219 + 34154676220.

It is an arithmetic number, because the mean of its divisors is an integer number (34154676220).

Almost surely, 2^68309352439 is an apocalyptic number.

68309352439 is a deficient number, since it is larger than the sum of its proper divisors (1).

68309352439 is an equidigital number, since it uses as much as digits as its factorization.

68309352439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4199040, while the sum is 52.

The spelling of 68309352439 in words is "sixty-eight billion, three hundred nine million, three hundred fifty-two thousand, four hundred thirty-nine".