68341993808651 has 2 divisors, whose sum is σ = 68341993808652. Its totient is φ = 68341993808650.

The previous prime is 68341993808629. The next prime is 68341993808743. The reversal of 68341993808651 is 15680839914386.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68341993808651 - 2¹⁸ = 68341993546507 is a prime.

It is not a weakly prime, because it can be changed into another prime (68341993808351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34170996904325 + 34170996904326.

It is an arithmetic number, because the mean of its divisors is an integer number (34170996904326).

Almost surely, 2^{68341993808651} is an apocalyptic number.

68341993808651 is a deficient number, since it is larger than the sum of its proper divisors (1).

68341993808651 is an equidigital number, since it uses as much as digits as its factorization.

68341993808651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 268738560, while the sum is 71.

The spelling of 68341993808651 in words is "sixty-eight trillion, three hundred forty-one billion, nine hundred ninety-three million, eight hundred eight thousand, six hundred fifty-one".