2216055816 has 96 divisors (see below), whose sum is σ = 6483072960. Its totient is φ = 679798656.

The previous prime is 2216055811. The next prime is 2216055833. The reversal of 2216055816 is 6185506122.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2216055811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 321381 + ... + 328203.

It is an arithmetic number, because the mean of its divisors is an integer number (67532010).

Almost surely, 2^2216055816 is an apocalyptic number.

2216055816 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2216055816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3241536480).

2216055816 is an abundant number, since it is smaller than the sum of its proper divisors (4267017144).

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

2216055816 is a wasteful number, since it uses less digits than its factorization.

2216055816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7195 (or 7188 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 2216055816 is about 47075.0020286776. The cubic root of 2216055816 is about 1303.7477289976.

The spelling of 2216055816 in words is "two billion, two hundred sixteen million, fifty-five thousand, eight hundred sixteen".