18804431231112 has 32 divisors (see below), whose sum is σ = 47011209648480. Its totient is φ = 6268126200960.

The previous prime is 18804431231059. The next prime is 18804431231129. The reversal of 18804431231112 is 21113213440881.

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, 9914148 + ... + 11657580.

It is an arithmetic number, because the mean of its divisors is an integer number (1469100301515).

Almost surely, 2^{18804431231112} is an apocalyptic number.

18804431231112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18804431231112 is an abundant number, since it is smaller than the sum of its proper divisors (28206778417368).

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

18804431231112 is a wasteful number, since it uses less digits than its factorization.

18804431231112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2192853 (or 2192849 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

Adding to 18804431231112 its reverse (21113213440881), we get a palindrome (39917644671993).

The spelling of 18804431231112 in words is "eighteen trillion, eight hundred four billion, four hundred thirty-one million, two hundred thirty-one thousand, one hundred twelve".