2218665868700 has 18 divisors (see below), whose sum is σ = 4814504935296. Its totient is φ = 887466347440.

The previous prime is 2218665868697. The next prime is 2218665868733. The reversal of 2218665868700 is 78685668122.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2218665868700.

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 5 ways as a sum of consecutive naturals, for example, 11093329244 + ... + 11093329443.

Almost surely, 2^{2218665868700} is an apocalyptic number.

2218665868700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2218665868700 is an abundant number, since it is smaller than the sum of its proper divisors (2595839066596).

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

2218665868700 is a wasteful number, since it uses less digits than its factorization.

2218665868700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22186658701 (or 22186658694 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 59.

The spelling of 2218665868700 in words is "two trillion, two hundred eighteen billion, six hundred sixty-five million, eight hundred sixty-eight thousand, seven hundred".