68323127209 has 2 divisors, whose sum is σ = 68323127210. Its totient is φ = 68323127208.

The previous prime is 68323127207. The next prime is 68323127233. The reversal of 68323127209 is 90272132386.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66625934400 + 1697192809 = 258120^2 + 41197^2 .

It is a cyclic number.

It is not a de Polignac number, because 68323127209 - 2¹ = 68323127207 is a prime.

It is a super-2 number, since 2×68323127209² (a number of 22 digits) contains 22 as substring.

Together with 68323127207, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (68323127207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34161563604 + 34161563605.

It is an arithmetic number, because the mean of its divisors is an integer number (34161563605).

Almost surely, 2^68323127209 is an apocalyptic number.

It is an amenable number.

68323127209 is a deficient number, since it is larger than the sum of its proper divisors (1).

68323127209 is an equidigital number, since it uses as much as digits as its factorization.

68323127209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 68323127209 in words is "sixty-eight billion, three hundred twenty-three million, one hundred twenty-seven thousand, two hundred nine".