68313117309 has 8 divisors (see below), whose sum is σ = 92577339552. Its totient is φ = 44795486640.

The previous prime is 68313117289. The next prime is 68313117319. The reversal of 68313117309 is 90371131386.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68313117309 - 2⁸ = 68313117053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68313117319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186647679 + ... + 186648044.

It is an arithmetic number, because the mean of its divisors is an integer number (11572167444).

Almost surely, 2^68313117309 is an apocalyptic number.

It is an amenable number.

68313117309 is a deficient number, since it is larger than the sum of its proper divisors (24264222243).

68313117309 is a wasteful number, since it uses less digits than its factorization.

68313117309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373295787.

The product of its (nonzero) digits is 81648, while the sum is 42.

The spelling of 68313117309 in words is "sixty-eight billion, three hundred thirteen million, one hundred seventeen thousand, three hundred nine".