68107938140 has 48 divisors (see below), whose sum is σ = 156085259904. Its totient is φ = 24757608000.

The previous prime is 68107938053. The next prime is 68107938179. The reversal of 68107938140 is 4183970186.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 572927 + ... + 681513.

It is an arithmetic number, because the mean of its divisors is an integer number (3251776248).

Almost surely, 2^68107938140 is an apocalyptic number.

It is an amenable number.

68107938140 is an abundant number, since it is smaller than the sum of its proper divisors (87977321764).

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

68107938140 is a wasteful number, since it uses less digits than its factorization.

68107938140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111458 (or 111456 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 47.

The spelling of 68107938140 in words is "sixty-eight billion, one hundred seven million, nine hundred thirty-eight thousand, one hundred forty".