68034912991 has 2 divisors, whose sum is σ = 68034912992. Its totient is φ = 68034912990.

The previous prime is 68034912943. The next prime is 68034913013. The reversal of 68034912991 is 19921943086.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68034912991 - 2¹¹ = 68034910943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68034912191) 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, 34017456495 + 34017456496.

It is an arithmetic number, because the mean of its divisors is an integer number (34017456496).

Almost surely, 2^68034912991 is an apocalyptic number.

68034912991 is a deficient number, since it is larger than the sum of its proper divisors (1).

68034912991 is an equidigital number, since it uses as much as digits as its factorization.

68034912991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 839808, while the sum is 52.

The spelling of 68034912991 in words is "sixty-eight billion, thirty-four million, nine hundred twelve thousand, nine hundred ninety-one".