138500336813 has 2 divisors, whose sum is σ = 138500336814. Its totient is φ = 138500336812.

The previous prime is 138500336801. The next prime is 138500336873. The reversal of 138500336813 is 318633005831.

138500336813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104518363849 + 33981972964 = 323293^2 + 184342^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138500336813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138500336873) 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 as a sum of consecutive naturals, namely, 69250168406 + 69250168407.

It is an arithmetic number, because the mean of its divisors is an integer number (69250168407).

Almost surely, 2^138500336813 is an apocalyptic number.

It is an amenable number.

138500336813 is a deficient number, since it is larger than the sum of its proper divisors (1).

138500336813 is an equidigital number, since it uses as much as digits as its factorization.

138500336813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 138500336813 in words is "one hundred thirty-eight billion, five hundred million, three hundred thirty-six thousand, eight hundred thirteen".