138499835993 has 2 divisors, whose sum is σ = 138499835994. Its totient is φ = 138499835992.

The previous prime is 138499835983. The next prime is 138499836011. The reversal of 138499835993 is 399538994831.

138499835993 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., 111264274969 + 27235561024 = 333563^2 + 165032^2 .

It is a cyclic number.

It is not a de Polignac number, because 138499835993 - 2¹⁴ = 138499819609 is a prime.

It is not a weakly prime, because it can be changed into another prime (138499835953) 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, 69249917996 + 69249917997.

It is an arithmetic number, because the mean of its divisors is an integer number (69249917997).

Almost surely, 2^138499835993 is an apocalyptic number.

It is an amenable number.

138499835993 is a deficient number, since it is larger than the sum of its proper divisors (1).

138499835993 is an equidigital number, since it uses as much as digits as its factorization.

138499835993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226748160, while the sum is 71.

The spelling of 138499835993 in words is "one hundred thirty-eight billion, four hundred ninety-nine million, eight hundred thirty-five thousand, nine hundred ninety-three".