12069129509 has 2 divisors, whose sum is σ = 12069129510. Its totient is φ = 12069129508.

The previous prime is 12069129407. The next prime is 12069129581. The reversal of 12069129509 is 90592196021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8528522500 + 3540607009 = 92350^2 + 59503^2 .

It is an emirp because it is prime and its reverse (90592196021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12069129509 - 2²⁴ = 12052352293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12069129509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12069129109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6034564754 + 6034564755.

It is an arithmetic number, because the mean of its divisors is an integer number (6034564755).

Almost surely, 2^12069129509 is an apocalyptic number.

It is an amenable number.

12069129509 is a deficient number, since it is larger than the sum of its proper divisors (1).

12069129509 is an equidigital number, since it uses as much as digits as its factorization.

12069129509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87480, while the sum is 44.

The spelling of 12069129509 in words is "twelve billion, sixty-nine million, one hundred twenty-nine thousand, five hundred nine".