68312429466191 has 2 divisors, whose sum is σ = 68312429466192. Its totient is φ = 68312429466190.

The previous prime is 68312429466167. The next prime is 68312429466263. The reversal of 68312429466191 is 19166492421386.

It is a happy number.

68312429466191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68312429466191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68312429466161) 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, 34156214733095 + 34156214733096.

It is an arithmetic number, because the mean of its divisors is an integer number (34156214733096).

Almost surely, 2^{68312429466191} is an apocalyptic number.

68312429466191 is a deficient number, since it is larger than the sum of its proper divisors (1).

68312429466191 is an equidigital number, since it uses as much as digits as its factorization.

68312429466191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26873856, while the sum is 62.

The spelling of 68312429466191 in words is "sixty-eight trillion, three hundred twelve billion, four hundred twenty-nine million, four hundred sixty-six thousand, one hundred ninety-one".