18201110000 has 50 divisors (see below), whose sum is σ = 44066731632. Its totient is φ = 7280440000.

The previous prime is 18201109987. The next prime is 18201110051. The reversal of 18201110000 is 1110281.

It is a tau number, because it is divible by the number of its divisors (50).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 900056 + ... + 920055.

Almost surely, 2^18201110000 is an apocalyptic number.

18201110000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18201110000 is an abundant number, since it is smaller than the sum of its proper divisors (25865621632).

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

18201110000 is an equidigital number, since it uses as much as digits as its factorization.

18201110000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820139 (or 1820118 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 18201110000 its reverse (1110281), we get a palindrome (18202220281).

The spelling of 18201110000 in words is "eighteen billion, two hundred one million, one hundred ten thousand".