68345111109 has 24 divisors (see below), whose sum is σ = 105435994720. Its totient is φ = 39241208160.

The previous prime is 68345111099. The next prime is 68345111111. The reversal of 68345111109 is 90111154386.

It is not a de Polignac number, because 68345111109 - 2¹⁷ = 68344980037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68345111309) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4947802 + ... + 4961595.

Almost surely, 2^68345111109 is an apocalyptic number.

It is an amenable number.

68345111109 is a deficient number, since it is larger than the sum of its proper divisors (37090883611).

68345111109 is a wasteful number, since it uses less digits than its factorization.

68345111109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9909441 (or 9909430 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 39.

The spelling of 68345111109 in words is "sixty-eight billion, three hundred forty-five million, one hundred eleven thousand, one hundred nine".