138264445117 has 2 divisors, whose sum is σ = 138264445118. Its totient is φ = 138264445116.

The previous prime is 138264445097. The next prime is 138264445139. The reversal of 138264445117 is 711544462831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73900247716 + 64364197401 = 271846^2 + 253701^2 .

It is a cyclic number.

It is not a de Polignac number, because 138264445117 - 2¹⁹ = 138263920829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138264445157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69132222558 + 69132222559.

It is an arithmetic number, because the mean of its divisors is an integer number (69132222559).

Almost surely, 2^138264445117 is an apocalyptic number.

It is an amenable number.

138264445117 is a deficient number, since it is larger than the sum of its proper divisors (1).

138264445117 is an equidigital number, since it uses as much as digits as its factorization.

138264445117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 645120, while the sum is 46.

The spelling of 138264445117 in words is "one hundred thirty-eight billion, two hundred sixty-four million, four hundred forty-five thousand, one hundred seventeen".