18291100012 has 12 divisors (see below), whose sum is σ = 32013273600. Its totient is φ = 9144450416.

The previous prime is 18291100007. The next prime is 18291100043. The reversal of 18291100012 is 21000119281.

It is a self number, because there is not a number n which added to its sum of digits gives 18291100012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236887 + ... + 304462.

It is an arithmetic number, because the mean of its divisors is an integer number (2667772800).

Almost surely, 2^18291100012 is an apocalyptic number.

It is an amenable number.

18291100012 is a deficient number, since it is larger than the sum of its proper divisors (13722173588).

18291100012 is a wasteful number, since it uses less digits than its factorization.

18291100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549800 (or 549798 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 25.

Adding to 18291100012 its reverse (21000119281), we get a palindrome (39291219293).

The spelling of 18291100012 in words is "eighteen billion, two hundred ninety-one million, one hundred thousand, twelve".