12827185909 has 2 divisors, whose sum is σ = 12827185910. Its totient is φ = 12827185908.

The previous prime is 12827185883. The next prime is 12827185927. The reversal of 12827185909 is 90958172821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8144521009 + 4682664900 = 90247^2 + 68430^2 .

It is a cyclic number.

It is not a de Polignac number, because 12827185909 - 2¹⁷ = 12827054837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12827185009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6413592954 + 6413592955.

It is an arithmetic number, because the mean of its divisors is an integer number (6413592955).

Almost surely, 2^12827185909 is an apocalyptic number.

It is an amenable number.

12827185909 is a deficient number, since it is larger than the sum of its proper divisors (1).

12827185909 is an equidigital number, since it uses as much as digits as its factorization.

12827185909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 52.

The spelling of 12827185909 in words is "twelve billion, eight hundred twenty-seven million, one hundred eighty-five thousand, nine hundred nine".