2216768815 has 4 divisors (see below), whose sum is σ = 2660122584. Its totient is φ = 1773415048.

The previous prime is 2216768791. The next prime is 2216768843. The reversal of 2216768815 is 5188676122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2216768815 - 2⁵ = 2216768783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221676877 + ... + 221676886.

It is an arithmetic number, because the mean of its divisors is an integer number (665030646).

Almost surely, 2^2216768815 is an apocalyptic number.

2216768815 is a deficient number, since it is larger than the sum of its proper divisors (443353769).

2216768815 is an equidigital number, since it uses as much as digits as its factorization.

2216768815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443353768.

The product of its digits is 322560, while the sum is 46.

The square root of 2216768815 is about 47082.5744304621. The cubic root of 2216768815 is about 1303.8875376228.

The spelling of 2216768815 in words is "two billion, two hundred sixteen million, seven hundred sixty-eight thousand, eight hundred fifteen".