138199514689 has 16 divisors (see below), whose sum is σ = 149115433680. Its totient is φ = 127594055680.

The previous prime is 138199514669. The next prime is 138199514693. The reversal of 138199514689 is 986415991831.

It can be written as a sum of positive squares in 8 ways, for example, as 10303874064 + 127895640625 = 101508^2 + 357625^2 .

It is a cyclic number.

It is not a de Polignac number, because 138199514689 - 2⁵ = 138199514657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138199514689.

It is not an unprimeable number, because it can be changed into a prime (138199514639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7812747 + ... + 7830415.

It is an arithmetic number, because the mean of its divisors is an integer number (9319714605).

Almost surely, 2^138199514689 is an apocalyptic number.

It is an amenable number.

138199514689 is a deficient number, since it is larger than the sum of its proper divisors (10915918991).

138199514689 is a wasteful number, since it uses less digits than its factorization.

138199514689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26420.

The product of its digits is 16796160, while the sum is 64.

The spelling of 138199514689 in words is "one hundred thirty-eight billion, one hundred ninety-nine million, five hundred fourteen thousand, six hundred eighty-nine".