138944355576 has 64 divisors (see below), whose sum is σ = 374117940000. Its totient is φ = 42747883008.

The previous prime is 138944355559. The next prime is 138944355607. The reversal of 138944355576 is 675553449831.

It is a happy number.

138944355576 is digitally balanced in base 2, 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 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, 4899550 + ... + 4927826.

Almost surely, 2^138944355576 is an apocalyptic number.

It is an amenable number.

138944355576 is an abundant number, since it is smaller than the sum of its proper divisors (235173584424).

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

138944355576 is a wasteful number, since it uses less digits than its factorization.

138944355576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44048 (or 44044 counting only the distinct ones).

The product of its digits is 54432000, while the sum is 60.

The spelling of 138944355576 in words is "one hundred thirty-eight billion, nine hundred forty-four million, three hundred fifty-five thousand, five hundred seventy-six".