138174769697 has 2 divisors, whose sum is σ = 138174769698. Its totient is φ = 138174769696.

The previous prime is 138174769661. The next prime is 138174769717. The reversal of 138174769697 is 796967471831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76904163856 + 61270605841 = 277316^2 + 247529^2 .

It is a cyclic number.

It is not a de Polignac number, because 138174769697 - 2⁸ = 138174769441 is a prime.

It is not a weakly prime, because it can be changed into another prime (138174769627) 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, 69087384848 + 69087384849.

It is an arithmetic number, because the mean of its divisors is an integer number (69087384849).

Almost surely, 2^138174769697 is an apocalyptic number.

It is an amenable number.

138174769697 is a deficient number, since it is larger than the sum of its proper divisors (1).

138174769697 is an equidigital number, since it uses as much as digits as its factorization.

138174769697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96018048, while the sum is 68.

The spelling of 138174769697 in words is "one hundred thirty-eight billion, one hundred seventy-four million, seven hundred sixty-nine thousand, six hundred ninety-seven".