138834651017 has 2 divisors, whose sum is σ = 138834651018. Its totient is φ = 138834651016.

The previous prime is 138834650987. The next prime is 138834651019. The reversal of 138834651017 is 710156438831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115585720441 + 23248930576 = 339979^2 + 152476^2 .

It is a cyclic number.

It is not a de Polignac number, because 138834651017 - 2¹² = 138834646921 is a prime.

Together with 138834651019, 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 (138834651019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69417325508 + 69417325509.

It is an arithmetic number, because the mean of its divisors is an integer number (69417325509).

Almost surely, 2^138834651017 is an apocalyptic number.

It is an amenable number.

138834651017 is a deficient number, since it is larger than the sum of its proper divisors (1).

138834651017 is an equidigital number, since it uses as much as digits as its factorization.

138834651017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 138834651017 in words is "one hundred thirty-eight billion, eight hundred thirty-four million, six hundred fifty-one thousand, seventeen".