68313290191 has 2 divisors, whose sum is σ = 68313290192. Its totient is φ = 68313290190.

The previous prime is 68313290189. The next prime is 68313290203. The reversal of 68313290191 is 19109231386.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68313290191 - 2¹ = 68313290189 is a prime.

Together with 68313290189, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68313290791) 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, 34156645095 + 34156645096.

It is an arithmetic number, because the mean of its divisors is an integer number (34156645096).

Almost surely, 2^68313290191 is an apocalyptic number.

68313290191 is a deficient number, since it is larger than the sum of its proper divisors (1).

68313290191 is an equidigital number, since it uses as much as digits as its factorization.

68313290191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 43.

The spelling of 68313290191 in words is "sixty-eight billion, three hundred thirteen million, two hundred ninety thousand, one hundred ninety-one".