138585175133 has 2 divisors, whose sum is σ = 138585175134. Its totient is φ = 138585175132.

The previous prime is 138585175087. The next prime is 138585175139. The reversal of 138585175133 is 331571585831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94896650809 + 43688524324 = 308053^2 + 209018^2 .

It is an emirp because it is prime and its reverse (331571585831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138585175133 - 2¹⁰ = 138585174109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138585175139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69292587566 + 69292587567.

It is an arithmetic number, because the mean of its divisors is an integer number (69292587567).

Almost surely, 2^138585175133 is an apocalyptic number.

It is an amenable number.

138585175133 is a deficient number, since it is larger than the sum of its proper divisors (1).

138585175133 is an equidigital number, since it uses as much as digits as its factorization.

138585175133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512000, while the sum is 50.

The spelling of 138585175133 in words is "one hundred thirty-eight billion, five hundred eighty-five million, one hundred seventy-five thousand, one hundred thirty-three".