68591943168 has 320 divisors, whose sum is σ = 226941665280. Its totient is φ = 17965670400.

The previous prime is 68591943139. The next prime is 68591943181. The reversal of 68591943168 is 86134919586.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6327513 + ... + 6338343.

It is an arithmetic number, because the mean of its divisors is an integer number (709192704).

Almost surely, 2^68591943168 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 68591943168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113470832640).

68591943168 is an abundant number, since it is smaller than the sum of its proper divisors (158349722112).

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

68591943168 is a wasteful number, since it uses less digits than its factorization.

68591943168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10909 (or 10893 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 60.

The spelling of 68591943168 in words is "sixty-eight billion, five hundred ninety-one million, nine hundred forty-three thousand, one hundred sixty-eight".