18201000011020 has 12 divisors (see below), whose sum is σ = 38222100023184. Its totient is φ = 7280400004400.

The previous prime is 18201000010961. The next prime is 18201000011107. The reversal of 18201000011020 is 2011000010281.

It is a junction number, because it is equal to n+sod(n) for n = 18201000010985 and 18201000011003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455025000256 + ... + 455025000295.

It is an arithmetic number, because the mean of its divisors is an integer number (3185175001932).

Almost surely, 2^{18201000011020} is an apocalyptic number.

18201000011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18201000011020 is an abundant number, since it is smaller than the sum of its proper divisors (20021100012164).

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

18201000011020 is a wasteful number, since it uses less digits than its factorization.

18201000011020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910050000560 (or 910050000558 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

The spelling of 18201000011020 in words is "eighteen trillion, two hundred one billion, eleven thousand, twenty".