68986338191 has 2 divisors, whose sum is σ = 68986338192. Its totient is φ = 68986338190.

The previous prime is 68986338131. The next prime is 68986338193. The reversal of 68986338191 is 19183368986.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68986338191 is a prime.

It is a super-2 number, since 2×68986338191² (a number of 22 digits) contains 22 as substring.

Together with 68986338193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68986338193) 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, 34493169095 + 34493169096.

It is an arithmetic number, because the mean of its divisors is an integer number (34493169096).

Almost surely, 2^68986338191 is an apocalyptic number.

68986338191 is a deficient number, since it is larger than the sum of its proper divisors (1).

68986338191 is an equidigital number, since it uses as much as digits as its factorization.

68986338191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13436928, while the sum is 62.

The spelling of 68986338191 in words is "sixty-eight billion, nine hundred eighty-six million, three hundred thirty-eight thousand, one hundred ninety-one".