12165484789 has 2 divisors, whose sum is σ = 12165484790. Its totient is φ = 12165484788.

The previous prime is 12165484777. The next prime is 12165484871. The reversal of 12165484789 is 98748456121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7613958564 + 4551526225 = 87258^2 + 67465^2 .

It is a cyclic number.

It is not a de Polignac number, because 12165484789 - 2²⁵ = 12131930357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12165484729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6082742394 + 6082742395.

It is an arithmetic number, because the mean of its divisors is an integer number (6082742395).

Almost surely, 2^12165484789 is an apocalyptic number.

It is an amenable number.

12165484789 is a deficient number, since it is larger than the sum of its proper divisors (1).

12165484789 is an equidigital number, since it uses as much as digits as its factorization.

12165484789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3870720, while the sum is 55.

The spelling of 12165484789 in words is "twelve billion, one hundred sixty-five million, four hundred eighty-four thousand, seven hundred eighty-nine".