12289432681 has 8 divisors (see below), whose sum is σ = 12509492480. Its totient is φ = 12070985472.

The previous prime is 12289432667. The next prime is 12289432699. The reversal of 12289432681 is 18623498221.

12289432681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12289432681 is a prime.

It is a super-2 number, since 2×12289432681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12289432601) 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 in 7 ways as a sum of consecutive naturals, for example, 387765 + ... + 418258.

It is an arithmetic number, because the mean of its divisors is an integer number (1563686560).

Almost surely, 2^12289432681 is an apocalyptic number.

It is an amenable number.

12289432681 is a deficient number, since it is larger than the sum of its proper divisors (220059799).

12289432681 is an equidigital number, since it uses as much as digits as its factorization.

12289432681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806295.

The product of its digits is 331776, while the sum is 46.

The spelling of 12289432681 in words is "twelve billion, two hundred eighty-nine million, four hundred thirty-two thousand, six hundred eighty-one".