12159707449 has 2 divisors, whose sum is σ = 12159707450. Its totient is φ = 12159707448.

The previous prime is 12159707447. The next prime is 12159707467. The reversal of 12159707449 is 94470795121.

12159707449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7468416400 + 4691291049 = 86420^2 + 68493^2 .

It is a cyclic number.

It is not a de Polignac number, because 12159707449 - 2¹ = 12159707447 is a prime.

Together with 12159707447, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12159707447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6079853724 + 6079853725.

It is an arithmetic number, because the mean of its divisors is an integer number (6079853725).

Almost surely, 2^12159707449 is an apocalyptic number.

It is an amenable number.

12159707449 is a deficient number, since it is larger than the sum of its proper divisors (1).

12159707449 is an equidigital number, since it uses as much as digits as its factorization.

12159707449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 635040, while the sum is 49.

The spelling of 12159707449 in words is "twelve billion, one hundred fifty-nine million, seven hundred seven thousand, four hundred forty-nine".