138017650289 has 4 divisors (see below), whose sum is σ = 139384161780. Its totient is φ = 136651138800.

The previous prime is 138017650279. The next prime is 138017650319. The reversal of 138017650289 is 982056710831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 135247417600 + 2770232689 = 367760^2 + 52633^2 .

It is a cyclic number.

It is not a de Polignac number, because 138017650289 - 2⁸ = 138017650033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138017650229) 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 in 3 ways as a sum of consecutive naturals, for example, 683255594 + ... + 683255795.

It is an arithmetic number, because the mean of its divisors is an integer number (34846040445).

Almost surely, 2^138017650289 is an apocalyptic number.

It is an amenable number.

138017650289 is a deficient number, since it is larger than the sum of its proper divisors (1366511491).

138017650289 is a wasteful number, since it uses less digits than its factorization.

138017650289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366511490.

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 138017650289 in words is "one hundred thirty-eight billion, seventeen million, six hundred fifty thousand, two hundred eighty-nine".