138675511529 has 2 divisors, whose sum is σ = 138675511530. Its totient is φ = 138675511528.

The previous prime is 138675511483. The next prime is 138675511531. The reversal of 138675511529 is 925115576831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122466402304 + 16209109225 = 349952^2 + 127315^2 .

It is a cyclic number.

It is not a de Polignac number, because 138675511529 - 2³⁶ = 69956034793 is a prime.

Together with 138675511531, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (138675511129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69337755764 + 69337755765.

It is an arithmetic number, because the mean of its divisors is an integer number (69337755765).

Almost surely, 2^138675511529 is an apocalyptic number.

It is an amenable number.

138675511529 is a deficient number, since it is larger than the sum of its proper divisors (1).

138675511529 is an equidigital number, since it uses as much as digits as its factorization.

138675511529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268000, while the sum is 53.

The spelling of 138675511529 in words is "one hundred thirty-eight billion, six hundred seventy-five million, five hundred eleven thousand, five hundred twenty-nine".