138135530807 has 2 divisors, whose sum is σ = 138135530808. Its totient is φ = 138135530806.

The previous prime is 138135530791. The next prime is 138135530861. The reversal of 138135530807 is 708035531831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138135530807 - 2⁴ = 138135530791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138135530887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69067765403 + 69067765404.

It is an arithmetic number, because the mean of its divisors is an integer number (69067765404).

Almost surely, 2^138135530807 is an apocalyptic number.

138135530807 is a deficient number, since it is larger than the sum of its proper divisors (1).

138135530807 is an equidigital number, since it uses as much as digits as its factorization.

138135530807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 138135530807 in words is "one hundred thirty-eight billion, one hundred thirty-five million, five hundred thirty thousand, eight hundred seven".