1818200008000 has 112 divisors (see below), whose sum is σ = 4658040925200. Its totient is φ = 702201292800.

The previous prime is 1818200007919. The next prime is 1818200008039. The reversal of 1818200008000 is 8000028181.

It can be written as a sum of positive squares in 8 ways, for example, as 222950174976 + 1595249833024 = 472176^2 + 1263032^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1818200008000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3686535 + ... + 4150534.

Almost surely, 2^{1818200008000} is an apocalyptic number.

1818200008000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1818200008000 is an abundant number, since it is smaller than the sum of its proper divisors (2839840917200).

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

1818200008000 is an equidigital number, since it uses as much as digits as its factorization.

1818200008000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7837125 (or 7837105 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 28.

The spelling of 1818200008000 in words is "one trillion, eight hundred eighteen billion, two hundred million, eight thousand".