12173571269 has 2 divisors, whose sum is σ = 12173571270. Its totient is φ = 12173571268.

The previous prime is 12173571253. The next prime is 12173571331. The reversal of 12173571269 is 96217537121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6569102500 + 5604468769 = 81050^2 + 74863^2 .

It is a cyclic number.

It is not a de Polignac number, because 12173571269 - 2⁴ = 12173571253 is a prime.

It is a super-2 number, since 2×12173571269² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12173571229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6086785634 + 6086785635.

It is an arithmetic number, because the mean of its divisors is an integer number (6086785635).

Almost surely, 2^12173571269 is an apocalyptic number.

It is an amenable number.

12173571269 is a deficient number, since it is larger than the sum of its proper divisors (1).

12173571269 is an equidigital number, since it uses as much as digits as its factorization.

12173571269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 44.

The spelling of 12173571269 in words is "twelve billion, one hundred seventy-three million, five hundred seventy-one thousand, two hundred sixty-nine".