68717845615 has 8 divisors (see below), whose sum is σ = 84472669008. Its totient is φ = 53633440320.

The previous prime is 68717845583. The next prime is 68717845639. The reversal of 68717845615 is 51654871786.

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

It is not a de Polignac number, because 68717845615 - 2⁵ = 68717845583 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68717845615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167604297 + ... + 167604706.

It is an arithmetic number, because the mean of its divisors is an integer number (10559083626).

Almost surely, 2^68717845615 is an apocalyptic number.

68717845615 is a deficient number, since it is larger than the sum of its proper divisors (15754823393).

68717845615 is a wasteful number, since it uses less digits than its factorization.

68717845615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335209049.

The product of its digits is 11289600, while the sum is 58.

The spelling of 68717845615 in words is "sixty-eight billion, seven hundred seventeen million, eight hundred forty-five thousand, six hundred fifteen".