12559946289 has 24 divisors (see below), whose sum is σ = 18418248576. Its totient is φ = 7607608800.

The previous prime is 12559946279. The next prime is 12559946291. The reversal of 12559946289 is 98264995521.

It is not a de Polignac number, because 12559946289 - 2²⁷ = 12425728561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12559946249) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 669927 + ... + 688419.

It is an arithmetic number, because the mean of its divisors is an integer number (767427024).

Almost surely, 2^12559946289 is an apocalyptic number.

It is an amenable number.

12559946289 is a deficient number, since it is larger than the sum of its proper divisors (5858302287).

12559946289 is a wasteful number, since it uses less digits than its factorization.

12559946289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20389 (or 20378 counting only the distinct ones).

The product of its digits is 13996800, while the sum is 60.

The spelling of 12559946289 in words is "twelve billion, five hundred fifty-nine million, nine hundred forty-six thousand, two hundred eighty-nine".