18105560112 has 40 divisors (see below), whose sum is σ = 46872910656. Its totient is φ = 6022255936.

The previous prime is 18105560093. The next prime is 18105560171. The reversal of 18105560112 is 21106550181.

It is a super-2 number, since 2×18105560112² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18105560112.

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, 381438 + ... + 426269.

Almost surely, 2^18105560112 is an apocalyptic number.

18105560112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18105560112 is an abundant number, since it is smaller than the sum of its proper divisors (28767350544).

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

18105560112 is a wasteful number, since it uses less digits than its factorization.

18105560112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808185 (or 808179 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 30.

The spelling of 18105560112 in words is "eighteen billion, one hundred five million, five hundred sixty thousand, one hundred twelve".