138942328704 has 64 divisors (see below), whose sum is σ = 371199065040. Its totient is φ = 46046375936.

The previous prime is 138942328691. The next prime is 138942328709. The reversal of 138942328704 is 407823249831.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-3 number, since 3×138942328704³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138942328709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 979317 + ... + 1112180.

Almost surely, 2^138942328704 is an apocalyptic number.

It is an amenable number.

138942328704 is an abundant number, since it is smaller than the sum of its proper divisors (232256736336).

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

138942328704 is a wasteful number, since it uses less digits than its factorization.

138942328704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091687 (or 2091675 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 51.

The spelling of 138942328704 in words is "one hundred thirty-eight billion, nine hundred forty-two million, three hundred twenty-eight thousand, seven hundred four".