138191112039 has 8 divisors (see below), whose sum is σ = 184801567600. Its totient is φ = 91854032256.

The previous prime is 138191111987. The next prime is 138191112053. The reversal of 138191112039 is 930211191831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138191112039 - 2⁷ = 138191111911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138191111988 and 138191112006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138191112139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68342764 + ... + 68344785.

It is an arithmetic number, because the mean of its divisors is an integer number (23100195950).

Almost surely, 2^138191112039 is an apocalyptic number.

138191112039 is a deficient number, since it is larger than the sum of its proper divisors (46610455561).

138191112039 is a wasteful number, since it uses less digits than its factorization.

138191112039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136687889.

The product of its (nonzero) digits is 11664, while the sum is 39.

The spelling of 138191112039 in words is "one hundred thirty-eight billion, one hundred ninety-one million, one hundred twelve thousand, thirty-nine".