12603856018 has 16 divisors (see below), whose sum is σ = 20663959680. Its totient is φ = 5730340176.

The previous prime is 12603855989. The next prime is 12603856019. The reversal of 12603856018 is 81065830621.

It is not an unprimeable number, because it can be changed into a prime (12603856019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3615898 + ... + 3619381.

It is an arithmetic number, because the mean of its divisors is an integer number (1291497480).

Almost surely, 2^12603856018 is an apocalyptic number.

12603856018 is a deficient number, since it is larger than the sum of its proper divisors (8060103662).

12603856018 is a wasteful number, since it uses less digits than its factorization.

12603856018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7235361.

The product of its (nonzero) digits is 69120, while the sum is 40.

The spelling of 12603856018 in words is "twelve billion, six hundred three million, eight hundred fifty-six thousand, eighteen".