138650605267 has 2 divisors, whose sum is σ = 138650605268. Its totient is φ = 138650605266.

The previous prime is 138650605253. The next prime is 138650605297. The reversal of 138650605267 is 762506056831.

It is a weak prime.

It is an emirp because it is prime and its reverse (762506056831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138650605267 - 2²⁷ = 138516387539 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138650605267.

It is not a weakly prime, because it can be changed into another prime (138650605297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69325302633 + 69325302634.

It is an arithmetic number, because the mean of its divisors is an integer number (69325302634).

Almost surely, 2^138650605267 is an apocalyptic number.

138650605267 is a deficient number, since it is larger than the sum of its proper divisors (1).

138650605267 is an equidigital number, since it uses as much as digits as its factorization.

138650605267 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1814400, while the sum is 49.

The spelling of 138650605267 in words is "one hundred thirty-eight billion, six hundred fifty million, six hundred five thousand, two hundred sixty-seven".