18603043978412 has 48 divisors (see below), whose sum is σ = 33624478417152. Its totient is φ = 8996390979840.

The previous prime is 18603043978399. The next prime is 18603043978427. The reversal of 18603043978412 is 21487934030681.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3436731818 + ... + 3436737230.

It is an arithmetic number, because the mean of its divisors is an integer number (700509967024).

Almost surely, 2^{18603043978412} is an apocalyptic number.

It is an amenable number.

18603043978412 is a deficient number, since it is larger than the sum of its proper divisors (15021434438740).

18603043978412 is a wasteful number, since it uses less digits than its factorization.

18603043978412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15978 (or 15976 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 56.

The spelling of 18603043978412 in words is "eighteen trillion, six hundred three billion, forty-three million, nine hundred seventy-eight thousand, four hundred twelve".