12163567709 has 2 divisors, whose sum is σ = 12163567710. Its totient is φ = 12163567708.

The previous prime is 12163567693. The next prime is 12163567859. The reversal of 12163567709 is 90776536121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9225602500 + 2937965209 = 96050^2 + 54203^2 .

It is a cyclic number.

It is not a de Polignac number, because 12163567709 - 2⁴ = 12163567693 is a prime.

It is a super-2 number, since 2×12163567709² (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 (12163567909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6081783854 + 6081783855.

It is an arithmetic number, because the mean of its divisors is an integer number (6081783855).

Almost surely, 2^12163567709 is an apocalyptic number.

It is an amenable number.

12163567709 is a deficient number, since it is larger than the sum of its proper divisors (1).

12163567709 is an equidigital number, since it uses as much as digits as its factorization.

12163567709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 476280, while the sum is 47.

The spelling of 12163567709 in words is "twelve billion, one hundred sixty-three million, five hundred sixty-seven thousand, seven hundred nine".