18630543225012 has 24 divisors (see below), whose sum is σ = 44208068671200. Its totient is φ = 6104923768416.

The previous prime is 18630543224987. The next prime is 18630543225031. The reversal of 18630543225012 is 21052234503681.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13157162587 + ... + 13157164002.

It is an arithmetic number, because the mean of its divisors is an integer number (1842002861300).

Almost surely, 2^{18630543225012} is an apocalyptic number.

18630543225012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18630543225012 is an abundant number, since it is smaller than the sum of its proper divisors (25577525446188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18630543225012 is a wasteful number, since it uses less digits than its factorization.

18630543225012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26314326655 (or 26314326653 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

Adding to 18630543225012 its reverse (21052234503681), we get a palindrome (39682777728693).

The spelling of 18630543225012 in words is "eighteen trillion, six hundred thirty billion, five hundred forty-three million, two hundred twenty-five thousand, twelve".