68738011686 has 24 divisors (see below), whose sum is σ = 149009561064. Its totient is φ = 22900793280.

The previous prime is 68738011619. The next prime is 68738011687. The reversal of 68738011686 is 68611083786.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68738011687) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 954051 + ... + 1023566.

It is an arithmetic number, because the mean of its divisors is an integer number (6208731711).

Almost surely, 2^68738011686 is an apocalyptic number.

68738011686 is an abundant number, since it is smaller than the sum of its proper divisors (80271549378).

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

68738011686 is a wasteful number, since it uses less digits than its factorization.

68738011686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1979556 (or 1979553 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 68738011686 in words is "sixty-eight billion, seven hundred thirty-eight million, eleven thousand, six hundred eighty-six".