18201911110100 has 18 divisors (see below), whose sum is σ = 39498147109134. Its totient is φ = 7280764444000.

The previous prime is 18201911110081. The next prime is 18201911110111. The reversal of 18201911110100 is 101111910281.

It can be written as a sum of positive squares in 3 ways, for example, as 2874231966736 + 15327679143364 = 1695356^2 + 3915058^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18201911110100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 91009555451 + ... + 91009555650.

It is an arithmetic number, because the mean of its divisors is an integer number (2194341506063).

Almost surely, 2^{18201911110100} is an apocalyptic number.

18201911110100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18201911110100 is an abundant number, since it is smaller than the sum of its proper divisors (21296235999034).

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

18201911110100 is a wasteful number, since it uses less digits than its factorization.

18201911110100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182019111115 (or 182019111108 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 26.

The spelling of 18201911110100 in words is "eighteen trillion, two hundred one billion, nine hundred eleven million, one hundred ten thousand, one hundred".