138000016503 has 6 divisors (see below), whose sum is σ = 199333357184. Its totient is φ = 92000010996.

The previous prime is 138000016489. The next prime is 138000016543. The reversal of 138000016503 is 305610000831.

138000016503 is a `hidden beast` number, since 1 + 3 + 8 + 0 + 0 + 0 + 0 + 1 + 650 + 3 = 666.

It is not a de Polignac number, because 138000016503 - 2⁵ = 138000016471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138000016543) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7666667575 + ... + 7666667592.

Almost surely, 2^138000016503 is an apocalyptic number.

138000016503 is a deficient number, since it is larger than the sum of its proper divisors (61333340681).

138000016503 is a wasteful number, since it uses less digits than its factorization.

138000016503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15333335173 (or 15333335170 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The spelling of 138000016503 in words is "one hundred thirty-eight billion, sixteen thousand, five hundred three".