68915931760 has 160 divisors (see below), whose sum is σ = 181535256000. Its totient is φ = 24151400448.

The previous prime is 68915931737. The next prime is 68915931893. The reversal of 68915931760 is 6713951986.

It is a happy number.

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, 1760076 + ... + 1798804.

It is an arithmetic number, because the mean of its divisors is an integer number (1134595350).

Almost surely, 2^68915931760 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 68915931760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90767628000).

68915931760 is an abundant number, since it is smaller than the sum of its proper divisors (112619324240).

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

68915931760 is a wasteful number, since it uses less digits than its factorization.

68915931760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38843 (or 38837 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 55.

The spelling of 68915931760 in words is "sixty-eight billion, nine hundred fifteen million, nine hundred thirty-one thousand, seven hundred sixty".