138964057605169 has 2 divisors, whose sum is σ = 138964057605170. Its totient is φ = 138964057605168.

The previous prime is 138964057605097. The next prime is 138964057605187. The reversal of 138964057605169 is 961506750469831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86686993042225 + 52277064562944 = 9310585^2 + 7230288^2 .

It is an emirp because it is prime and its reverse (961506750469831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138964057605169 - 2²³ = 138964049216561 is a prime.

It is a super-2 number, since 2×138964057605169² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 138964057605098 and 138964057605107.

It is not a weakly prime, because it can be changed into another prime (138964057600169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69482028802584 + 69482028802585.

It is an arithmetic number, because the mean of its divisors is an integer number (69482028802585).

Almost surely, 2^{138964057605169} is an apocalyptic number.

It is an amenable number.

138964057605169 is a deficient number, since it is larger than the sum of its proper divisors (1).

138964057605169 is an equidigital number, since it uses as much as digits as its factorization.

138964057605169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 293932800, while the sum is 70.

The spelling of 138964057605169 in words is "one hundred thirty-eight trillion, nine hundred sixty-four billion, fifty-seven million, six hundred five thousand, one hundred sixty-nine".