12605792161 has 2 divisors, whose sum is σ = 12605792162. Its totient is φ = 12605792160.

The previous prime is 12605792153. The next prime is 12605792209. The reversal of 12605792161 is 16129750621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7899832161 + 4705960000 = 88881^2 + 68600^2 .

It is an emirp because it is prime and its reverse (16129750621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12605792161 - 2³ = 12605792153 is a prime.

It is not a weakly prime, because it can be changed into another prime (12605792561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6302896080 + 6302896081.

It is an arithmetic number, because the mean of its divisors is an integer number (6302896081).

Almost surely, 2^12605792161 is an apocalyptic number.

It is an amenable number.

12605792161 is a deficient number, since it is larger than the sum of its proper divisors (1).

12605792161 is an equidigital number, since it uses as much as digits as its factorization.

12605792161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 40.

The spelling of 12605792161 in words is "twelve billion, six hundred five million, seven hundred ninety-two thousand, one hundred sixty-one".