68288620727329 has 4 divisors (see below), whose sum is σ = 68892944804676. Its totient is φ = 67684296649984.

The previous prime is 68288620727317. The next prime is 68288620727339. The reversal of 68288620727329 is 92372702688286.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21597843433104 + 46690777294225 = 4647348^2 + 6833065^2 .

It is a cyclic number.

It is not a de Polignac number, because 68288620727329 - 2³⁵ = 68254260988961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68288620727339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302162038504 + ... + 302162038729.

It is an arithmetic number, because the mean of its divisors is an integer number (17223236201169).

Almost surely, 2^{68288620727329} is an apocalyptic number.

It is an amenable number.

68288620727329 is a deficient number, since it is larger than the sum of its proper divisors (604324077347).

68288620727329 is a wasteful number, since it uses less digits than its factorization.

68288620727329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604324077346.

The product of its (nonzero) digits is 390168576, while the sum is 70.

The spelling of 68288620727329 in words is "sixty-eight trillion, two hundred eighty-eight billion, six hundred twenty million, seven hundred twenty-seven thousand, three hundred twenty-nine".