138159257933 has 2 divisors, whose sum is σ = 138159257934. Its totient is φ = 138159257932.

The previous prime is 138159257927. The next prime is 138159257953. The reversal of 138159257933 is 339752951831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137542331689 + 616926244 = 370867^2 + 24838^2 .

It is an emirp because it is prime and its reverse (339752951831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138159257933 - 2⁶ = 138159257869 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138159257953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69079628966 + 69079628967.

It is an arithmetic number, because the mean of its divisors is an integer number (69079628967).

Almost surely, 2^138159257933 is an apocalyptic number.

It is an amenable number.

138159257933 is a deficient number, since it is larger than the sum of its proper divisors (1).

138159257933 is an equidigital number, since it uses as much as digits as its factorization.

138159257933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6123600, while the sum is 56.

The spelling of 138159257933 in words is "one hundred thirty-eight billion, one hundred fifty-nine million, two hundred fifty-seven thousand, nine hundred thirty-three".