12161434559 has 2 divisors, whose sum is σ = 12161434560. Its totient is φ = 12161434558.

The previous prime is 12161434547. The next prime is 12161434589. The reversal of 12161434559 is 95543416121.

It is a weak prime.

It is an emirp because it is prime and its reverse (95543416121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12161434559 - 2²⁸ = 11892999103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12161434589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6080717279 + 6080717280.

It is an arithmetic number, because the mean of its divisors is an integer number (6080717280).

Almost surely, 2^12161434559 is an apocalyptic number.

12161434559 is a deficient number, since it is larger than the sum of its proper divisors (1).

12161434559 is an equidigital number, since it uses as much as digits as its factorization.

12161434559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 41.

The spelling of 12161434559 in words is "twelve billion, one hundred sixty-one million, four hundred thirty-four thousand, five hundred fifty-nine".