18201000091100 has 36 divisors (see below), whose sum is σ = 39497425872744. Its totient is φ = 7280168575680.

The previous prime is 18201000091063. The next prime is 18201000091117. The reversal of 18201000091100 is 119000010281.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 285254 + ... + 6040146.

Almost surely, 2^{18201000091100} is an apocalyptic number.

18201000091100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18201000091100 is an abundant number, since it is smaller than the sum of its proper divisors (21296425781644).

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

18201000091100 is a wasteful number, since it uses less digits than its factorization.

18201000091100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5786534 (or 5786527 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 18201000091100 in words is "eighteen trillion, two hundred one billion, ninety-one thousand, one hundred".