201818200200 has 48 divisors (see below), whose sum is σ = 625636422480. Its totient is φ = 53818186560.

The previous prime is 201818200117. The next prime is 201818200219. The reversal of 201818200200 is 2002818102.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168181234 + ... + 168182433.

It is an arithmetic number, because the mean of its divisors is an integer number (13034092135).

Almost surely, 2^201818200200 is an apocalyptic number.

201818200200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201818200200 is an abundant number, since it is smaller than the sum of its proper divisors (423818222280).

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

201818200200 is a wasteful number, since it uses less digits than its factorization.

201818200200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336363686 (or 336363677 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The spelling of 201818200200 in words is "two hundred one billion, eight hundred eighteen million, two hundred thousand, two hundred".