2184218205864 has 32 divisors (see below), whose sum is σ = 5460892132320. Its totient is φ = 728026519616.

The previous prime is 2184218205853. The next prime is 2184218205887. The reversal of 2184218205864 is 4685028124812.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2501454 + ... + 3259709.

It is an arithmetic number, because the mean of its divisors is an integer number (170652879135).

Almost surely, 2^{2184218205864} is an apocalyptic number.

2184218205864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2184218205864 is an abundant number, since it is smaller than the sum of its proper divisors (3276673926456).

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

2184218205864 is a wasteful number, since it uses less digits than its factorization.

2184218205864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5776969 (or 5776965 counting only the distinct ones).

The product of its (nonzero) digits is 1966080, while the sum is 51.

The spelling of 2184218205864 in words is "two trillion, one hundred eighty-four billion, two hundred eighteen million, two hundred five thousand, eight hundred sixty-four".