138234017236 has 48 divisors (see below), whose sum is σ = 286015468032. Its totient is φ = 57225888000.

The previous prime is 138234017123. The next prime is 138234017261. The reversal of 138234017236 is 632710432831.

138234017236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 480156 + ... + 712051.

It is an arithmetic number, because the mean of its divisors is an integer number (5958655584).

Almost surely, 2^138234017236 is an apocalyptic number.

It is an amenable number.

138234017236 is an abundant number, since it is smaller than the sum of its proper divisors (147781450796).

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

138234017236 is a wasteful number, since it uses less digits than its factorization.

138234017236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192360 (or 1192358 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 138234017236 in words is "one hundred thirty-eight billion, two hundred thirty-four million, seventeen thousand, two hundred thirty-six".