12644101004 has 12 divisors (see below), whose sum is σ = 22238370000. Its totient is φ = 6290281008.

The previous prime is 12644101003. The next prime is 12644101049. The reversal of 12644101004 is 40010144621.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12644101003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7941479 + ... + 7943070.

It is an arithmetic number, because the mean of its divisors is an integer number (1853197500).

Almost surely, 2^12644101004 is an apocalyptic number.

It is an amenable number.

12644101004 is a deficient number, since it is larger than the sum of its proper divisors (9594268996).

12644101004 is a wasteful number, since it uses less digits than its factorization.

12644101004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15884752 (or 15884750 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 12644101004 its reverse (40010144621), we get a palindrome (52654245625).

The spelling of 12644101004 in words is "twelve billion, six hundred forty-four million, one hundred one thousand, four".