138813250132 has 6 divisors (see below), whose sum is σ = 242923187738. Its totient is φ = 69406625064.

The previous prime is 138813250091. The next prime is 138813250139. The reversal of 138813250132 is 231052318831.

It can be written as a sum of positive squares in only one way, i.e., 75205383696 + 63607866436 = 274236^2 + 252206^2 .

It is a junction number, because it is equal to n+sod(n) for n = 138813250091 and 138813250100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138813250139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17351656263 + ... + 17351656270.

Almost surely, 2^138813250132 is an apocalyptic number.

It is an amenable number.

138813250132 is a deficient number, since it is larger than the sum of its proper divisors (104109937606).

138813250132 is a wasteful number, since it uses less digits than its factorization.

138813250132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34703312537 (or 34703312535 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

Adding to 138813250132 its reverse (231052318831), we get a palindrome (369865568963).

The spelling of 138813250132 in words is "one hundred thirty-eight billion, eight hundred thirteen million, two hundred fifty thousand, one hundred thirty-two".