68881320132 has 24 divisors (see below), whose sum is σ = 161147162400. Its totient is φ = 22899856896.

The previous prime is 68881320107. The next prime is 68881320163. The reversal of 68881320132 is 23102318886.

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, 7568157 + ... + 7577252.

It is an arithmetic number, because the mean of its divisors is an integer number (6714465100).

Almost surely, 2^68881320132 is an apocalyptic number.

It is an amenable number.

68881320132 is an abundant number, since it is smaller than the sum of its proper divisors (92265842268).

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

68881320132 is a wasteful number, since it uses less digits than its factorization.

68881320132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15145795 (or 15145793 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The spelling of 68881320132 in words is "sixty-eight billion, eight hundred eighty-one million, three hundred twenty thousand, one hundred thirty-two".