12643159412 has 24 divisors (see below), whose sum is σ = 24596124672. Its totient is φ = 5647068000.

The previous prime is 12643159411. The next prime is 12643159523. The reversal of 12643159412 is 21495134621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12643159411) 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 in 7 ways as a sum of consecutive naturals, for example, 3919964 + ... + 3923187.

It is an arithmetic number, because the mean of its divisors is an integer number (1024838528).

Almost surely, 2^12643159412 is an apocalyptic number.

It is an amenable number.

12643159412 is a deficient number, since it is larger than the sum of its proper divisors (11952965260).

12643159412 is a wasteful number, since it uses less digits than its factorization.

12643159412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7843199 (or 7843197 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The spelling of 12643159412 in words is "twelve billion, six hundred forty-three million, one hundred fifty-nine thousand, four hundred twelve".