138320427832 has 32 divisors (see below), whose sum is σ = 260177979600. Its totient is φ = 68939942400.

The previous prime is 138320427821. The next prime is 138320427901. The reversal of 138320427832 is 238724023831.

138320427832 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 3702607 + ... + 3739777.

Almost surely, 2^138320427832 is an apocalyptic number.

It is an amenable number.

138320427832 is a deficient number, since it is larger than the sum of its proper divisors (121857551768).

138320427832 is a wasteful number, since it uses less digits than its factorization.

138320427832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38647 (or 38643 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 43.

The spelling of 138320427832 in words is "one hundred thirty-eight billion, three hundred twenty million, four hundred twenty-seven thousand, eight hundred thirty-two".