138438722112841 has 2 divisors, whose sum is σ = 138438722112842. Its totient is φ = 138438722112840.

The previous prime is 138438722112763. The next prime is 138438722112893. The reversal of 138438722112841 is 148211227834831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120958203610000 + 17480518502841 = 10998100^2 + 4180971^2 .

It is a cyclic number.

It is not a de Polignac number, because 138438722112841 - 2¹⁹ = 138438721588553 is a prime.

It is a super-2 number, since 2×138438722112841² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (138438722112941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69219361056420 + 69219361056421.

It is an arithmetic number, because the mean of its divisors is an integer number (69219361056421).

Almost surely, 2^{138438722112841} is an apocalyptic number.

It is an amenable number.

138438722112841 is a deficient number, since it is larger than the sum of its proper divisors (1).

138438722112841 is an equidigital number, since it uses as much as digits as its factorization.

138438722112841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4128768, while the sum is 55.

The spelling of 138438722112841 in words is "one hundred thirty-eight trillion, four hundred thirty-eight billion, seven hundred twenty-two million, one hundred twelve thousand, eight hundred forty-one".