12289511161 has 2 divisors, whose sum is σ = 12289511162. Its totient is φ = 12289511160.

The previous prime is 12289511131. The next prime is 12289511177. The reversal of 12289511161 is 16111598221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10931957136 + 1357554025 = 104556^2 + 36845^2 .

It is a cyclic number.

It is not a de Polignac number, because 12289511161 - 2⁷ = 12289511033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12289511161.

It is not a weakly prime, because it can be changed into another prime (12289511131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6144755580 + 6144755581.

It is an arithmetic number, because the mean of its divisors is an integer number (6144755581).

Almost surely, 2^12289511161 is an apocalyptic number.

It is an amenable number.

12289511161 is a deficient number, since it is larger than the sum of its proper divisors (1).

12289511161 is an equidigital number, since it uses as much as digits as its factorization.

12289511161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 37.

The spelling of 12289511161 in words is "twelve billion, two hundred eighty-nine million, five hundred eleven thousand, one hundred sixty-one".