68215718704 has 80 divisors (see below), whose sum is σ = 152893839168. Its totient is φ = 28879405056.

The previous prime is 68215718689. The next prime is 68215718723. The reversal of 68215718704 is 40781751286.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 6045612 + ... + 6056884.

Almost surely, 2^68215718704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68215718704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76446919584).

68215718704 is an abundant number, since it is smaller than the sum of its proper divisors (84678120464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68215718704 is a wasteful number, since it uses less digits than its factorization.

68215718704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11942 (or 11936 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 49.

The spelling of 68215718704 in words is "sixty-eight billion, two hundred fifteen million, seven hundred eighteen thousand, seven hundred four".