12603638912 has 24 divisors (see below), whose sum is σ = 25111342515. Its totient is φ = 6301184384.

The previous prime is 12603638903. The next prime is 12603638917. The reversal of 12603638912 is 21983630621.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 6301819456 + 6301819456 = 79384^2 + 79384^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=79384.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12603638912.

It is not an unprimeable number, because it can be changed into a prime (12603638917) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1265183 + ... + 1275105.

Almost surely, 2^12603638912 is an apocalyptic number.

It is an amenable number.

12603638912 is a deficient number, since it is larger than the sum of its proper divisors (12507703603).

12603638912 is an frugal number, since it uses more digits than its factorization.

12603638912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19860 (or 9925 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 12603638912 in words is "twelve billion, six hundred three million, six hundred thirty-eight thousand, nine hundred twelve".