138672822544 has 15 divisors (see below), whose sum is σ = 268681479717. Its totient is φ = 69335666496.

The previous prime is 138672822517. The next prime is 138672822553. The reversal of 138672822544 is 445228276831.

The square root of 138672822544 is 372388.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 42642250000 + 96030572544 = 206500^2 + 309888^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138672822491 and 138672822500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1443004 + ... + 1536100.

Almost surely, 2^138672822544 is an apocalyptic number.

138672822544 is the 372388-th square number.

It is an amenable number.

138672822544 is a deficient number, since it is larger than the sum of its proper divisors (130008657173).

138672822544 is an frugal number, since it uses more digits than its factorization.

138672822544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186202 (or 93099 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 52.

The spelling of 138672822544 in words is "one hundred thirty-eight billion, six hundred seventy-two million, eight hundred twenty-two thousand, five hundred forty-four".