12289512279 has 32 divisors (see below), whose sum is σ = 19155273984. Its totient is φ = 6925575680.

The previous prime is 12289512269. The next prime is 12289512281. The reversal of 12289512279 is 97221598221.

12289512279 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12289512279 - 2¹⁷ = 12289381207 is a prime.

It is a super-2 number, since 2×12289512279² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12289512229) 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 31 ways as a sum of consecutive naturals, for example, 85404 + ... + 178529.

It is an arithmetic number, because the mean of its divisors is an integer number (598602312).

Almost surely, 2^12289512279 is an apocalyptic number.

12289512279 is a deficient number, since it is larger than the sum of its proper divisors (6865761705).

12289512279 is a wasteful number, since it uses less digits than its factorization.

12289512279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264047.

The product of its digits is 362880, while the sum is 48.

The spelling of 12289512279 in words is "twelve billion, two hundred eighty-nine million, five hundred twelve thousand, two hundred seventy-nine".