138138334633 has 16 divisors (see below), whose sum is σ = 150006024000. Its totient is φ = 126450809280.

The previous prime is 138138334601. The next prime is 138138334667. The reversal of 138138334633 is 336433831831.

It is a happy number.

138138334633 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 138138334633 - 2⁵ = 138138334601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138138334133) 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, 1141398 + ... + 1256608.

It is an arithmetic number, because the mean of its divisors is an integer number (9375376500).

Almost surely, 2^138138334633 is an apocalyptic number.

138138334633 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

138138334633 is a deficient number, since it is larger than the sum of its proper divisors (11867689367).

138138334633 is a wasteful number, since it uses less digits than its factorization.

138138334633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115992.

The product of its digits is 1119744, while the sum is 46.

The spelling of 138138334633 in words is "one hundred thirty-eight billion, one hundred thirty-eight million, three hundred thirty-four thousand, six hundred thirty-three".