138203112006 has 16 divisors (see below), whose sum is σ = 307118026800. Its totient is φ = 46067703984.

The previous prime is 138203112001. The next prime is 138203112041. The reversal of 138203112006 is 600211302831.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138203112001) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1279658391 + ... + 1279658498.

It is an arithmetic number, because the mean of its divisors is an integer number (19194876675).

Almost surely, 2^138203112006 is an apocalyptic number.

138203112006 is an abundant number, since it is smaller than the sum of its proper divisors (168914914794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138203112006 is a wasteful number, since it uses less digits than its factorization.

138203112006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2559316900 (or 2559316894 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 138203112006 its reverse (600211302831), we get a palindrome (738414414837).

The spelling of 138203112006 in words is "one hundred thirty-eight billion, two hundred three million, one hundred twelve thousand, six".