138403041639 has 16 divisors (see below), whose sum is σ = 189553779072. Its totient is φ = 89761259808.

The previous prime is 138403041611. The next prime is 138403041643. The reversal of 138403041639 is 936140304831.

138403041639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 138403041639 - 2¹⁷ = 138402910567 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138403041639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138403041659) by changing a digit.

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, 663492 + ... + 846774.

It is an arithmetic number, because the mean of its divisors is an integer number (11847111192).

Almost surely, 2^138403041639 is an apocalyptic number.

138403041639 is a deficient number, since it is larger than the sum of its proper divisors (51150737433).

138403041639 is a wasteful number, since it uses less digits than its factorization.

138403041639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190126.

The product of its (nonzero) digits is 186624, while the sum is 42.

The spelling of 138403041639 in words is "one hundred thirty-eight billion, four hundred three million, forty-one thousand, six hundred thirty-nine".