138181833285 has 16 divisors (see below), whose sum is σ = 230703583104. Its totient is φ = 70492761152.

The previous prime is 138181833277. The next prime is 138181833299. The reversal of 138181833285 is 582338181831.

It is a cyclic number.

It is not a de Polignac number, because 138181833285 - 2³ = 138181833277 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200263182 + ... + 200263871.

It is an arithmetic number, because the mean of its divisors is an integer number (14418973944).

Almost surely, 2^138181833285 is an apocalyptic number.

138181833285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138181833285 is a deficient number, since it is larger than the sum of its proper divisors (92521749819).

138181833285 is a wasteful number, since it uses less digits than its factorization.

138181833285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400527084.

The product of its digits is 1105920, while the sum is 51.

The spelling of 138181833285 in words is "one hundred thirty-eight billion, one hundred eighty-one million, eight hundred thirty-three thousand, two hundred eighty-five".