12003638045 has 24 divisors (see below), whose sum is σ = 16888080384. Its totient is φ = 8166233376.

The previous prime is 12003638029. The next prime is 12003638051. The reversal of 12003638045 is 54083630021.

It is not a de Polignac number, because 12003638045 - 2⁴ = 12003638029 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161777 + ... + 224006.

It is an arithmetic number, because the mean of its divisors is an integer number (703670016).

Almost surely, 2^12003638045 is an apocalyptic number.

It is an amenable number.

12003638045 is a deficient number, since it is larger than the sum of its proper divisors (4884442339).

12003638045 is a wasteful number, since it uses less digits than its factorization.

12003638045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385929 (or 385922 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 12003638045 in words is "twelve billion, three million, six hundred thirty-eight thousand, forty-five".