138039745403 has 16 divisors (see below), whose sum is σ = 169929117696. Its totient is φ = 109524618720.

The previous prime is 138039745381. The next prime is 138039745411. The reversal of 138039745403 is 304547930831.

It is a cyclic number.

It is not a de Polignac number, because 138039745403 - 2⁶ = 138039745339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138039745603) 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, 13823876 + ... + 13833857.

It is an arithmetic number, because the mean of its divisors is an integer number (10620569856).

Almost surely, 2^138039745403 is an apocalyptic number.

138039745403 is a deficient number, since it is larger than the sum of its proper divisors (31889372293).

138039745403 is a wasteful number, since it uses less digits than its factorization.

138039745403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27657794.

The product of its (nonzero) digits is 1088640, while the sum is 47.

The spelling of 138039745403 in words is "one hundred thirty-eight billion, thirty-nine million, seven hundred forty-five thousand, four hundred three".