12643474412 has 12 divisors (see below), whose sum is σ = 22130847816. Its totient is φ = 6320375040.

The previous prime is 12643474339. The next prime is 12643474423. The reversal of 12643474412 is 21447434621.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 319514 + ... + 356897.

It is an arithmetic number, because the mean of its divisors is an integer number (1844237318).

Almost surely, 2^12643474412 is an apocalyptic number.

It is an amenable number.

12643474412 is a deficient number, since it is larger than the sum of its proper divisors (9487373404).

12643474412 is a wasteful number, since it uses less digits than its factorization.

12643474412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681088 (or 681086 counting only the distinct ones).

The product of its digits is 129024, while the sum is 38.

The spelling of 12643474412 in words is "twelve billion, six hundred forty-three million, four hundred seventy-four thousand, four hundred twelve".