138144912804 has 48 divisors (see below), whose sum is σ = 367833312000. Its totient is φ = 44803754208.

The previous prime is 138144912799. The next prime is 138144912809. The reversal of 138144912804 is 408219441831.

138144912804 is a `hidden beast` number, since 1 + 3 + 81 + 4 + 491 + 2 + 80 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (138144912799) and next prime (138144912809).

It is a self number, because there is not a number n which added to its sum of digits gives 138144912804.

It is not an unprimeable number, because it can be changed into a prime (138144912809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17281404 + ... + 17289395.

It is an arithmetic number, because the mean of its divisors is an integer number (7663194000).

Almost surely, 2^138144912804 is an apocalyptic number.

It is an amenable number.

138144912804 is an abundant number, since it is smaller than the sum of its proper divisors (229688399196).

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

138144912804 is a wasteful number, since it uses less digits than its factorization.

138144912804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34570849 (or 34570841 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The spelling of 138144912804 in words is "one hundred thirty-eight billion, one hundred forty-four million, nine hundred twelve thousand, eight hundred four".