138570075617 has 2 divisors, whose sum is σ = 138570075618. Its totient is φ = 138570075616.

The previous prime is 138570075613. The next prime is 138570075643. The reversal of 138570075617 is 716570075831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138561873121 + 8202496 = 372239^2 + 2864^2 .

It is a cyclic number.

It is not a de Polignac number, because 138570075617 - 2² = 138570075613 is a prime.

It is not a weakly prime, because it can be changed into another prime (138570075613) 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, 69285037808 + 69285037809.

It is an arithmetic number, because the mean of its divisors is an integer number (69285037809).

Almost surely, 2^138570075617 is an apocalyptic number.

It is an amenable number.

138570075617 is a deficient number, since it is larger than the sum of its proper divisors (1).

138570075617 is an equidigital number, since it uses as much as digits as its factorization.

138570075617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1234800, while the sum is 50.

The spelling of 138570075617 in words is "one hundred thirty-eight billion, five hundred seventy million, seventy-five thousand, six hundred seventeen".