138403053012 has 48 divisors (see below), whose sum is σ = 385121544192. Its totient is φ = 37824436320.

The previous prime is 138403052999. The next prime is 138403053043. The reversal of 138403053012 is 210350304831.

138403053012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 35816664 + ... + 35820527.

It is an arithmetic number, because the mean of its divisors is an integer number (8023365504).

Almost surely, 2^138403053012 is an apocalyptic number.

138403053012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138403053012 is an abundant number, since it is smaller than the sum of its proper divisors (246718491180).

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

138403053012 is a wasteful number, since it uses less digits than its factorization.

138403053012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71637228 (or 71637226 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 138403053012 its reverse (210350304831), we get a palindrome (348753357843).

The spelling of 138403053012 in words is "one hundred thirty-eight billion, four hundred three million, fifty-three thousand, twelve".