68309121301 has 2 divisors, whose sum is σ = 68309121302. Its totient is φ = 68309121300.

The previous prime is 68309121299. The next prime is 68309121311. The reversal of 68309121301 is 10312190386.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45710012401 + 22599108900 = 213799^2 + 150330^2 .

It is a cyclic number.

It is not a de Polignac number, because 68309121301 - 2¹ = 68309121299 is a prime.

It is a super-2 number, since 2×68309121301² (a number of 22 digits) contains 22 as substring.

Together with 68309121299, 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 (68309121311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34154560650 + 34154560651.

It is an arithmetic number, because the mean of its divisors is an integer number (34154560651).

Almost surely, 2^68309121301 is an apocalyptic number.

It is an amenable number.

68309121301 is a deficient number, since it is larger than the sum of its proper divisors (1).

68309121301 is an equidigital number, since it uses as much as digits as its factorization.

68309121301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The spelling of 68309121301 in words is "sixty-eight billion, three hundred nine million, one hundred twenty-one thousand, three hundred one".