138563189605 has 16 divisors (see below), whose sum is σ = 168572101824. Its totient is φ = 109320036480.

The previous prime is 138563189593. The next prime is 138563189623. The reversal of 138563189605 is 506981365831.

It is not a de Polignac number, because 138563189605 - 2⁵ = 138563189573 is a prime.

It is a super-2 number, since 2×138563189605² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4880862 + ... + 4909168.

It is an arithmetic number, because the mean of its divisors is an integer number (10535756364).

Almost surely, 2^138563189605 is an apocalyptic number.

It is an amenable number.

138563189605 is a deficient number, since it is larger than the sum of its proper divisors (30008912219).

138563189605 is a wasteful number, since it uses less digits than its factorization.

138563189605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41796.

The product of its (nonzero) digits is 4665600, while the sum is 55.

The spelling of 138563189605 in words is "one hundred thirty-eight billion, five hundred sixty-three million, one hundred eighty-nine thousand, six hundred five".