2218821134784 has 28 divisors (see below), whose sum is σ = 5870630919624. Its totient is φ = 739607044864.

The previous prime is 2218821134767. The next prime is 2218821134791. The reversal of 2218821134784 is 4874311288122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5778179847 + ... + 5778180230.

Almost surely, 2^{2218821134784} is an apocalyptic number.

2218821134784 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2218821134784 is an abundant number, since it is smaller than the sum of its proper divisors (3651809784840).

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

2218821134784 is a wasteful number, since it uses less digits than its factorization.

2218821134784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11556360092 (or 11556360082 counting only the distinct ones).

The product of its digits is 1376256, while the sum is 51.

The spelling of 2218821134784 in words is "two trillion, two hundred eighteen billion, eight hundred twenty-one million, one hundred thirty-four thousand, seven hundred eighty-four".