2216236328065 has 4 divisors (see below), whose sum is σ = 2659483593684. Its totient is φ = 1772989062448.

The previous prime is 2216236328023. The next prime is 2216236328077. The reversal of 2216236328065 is 5608236326122.

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

It can be written as a sum of positive squares in 2 ways, for example, as 942435165681 + 1273801162384 = 970791^2 + 1128628^2 .

It is a cyclic number.

It is not a de Polignac number, because 2216236328065 - 2⁷ = 2216236327937 is a prime.

It is a Duffinian 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, 221623632802 + ... + 221623632811.

It is an arithmetic number, because the mean of its divisors is an integer number (664870898421).

Almost surely, 2^{2216236328065} is an apocalyptic number.

It is an amenable number.

2216236328065 is a deficient number, since it is larger than the sum of its proper divisors (443247265619).

2216236328065 is an equidigital number, since it uses as much as digits as its factorization.

2216236328065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443247265618.

The product of its (nonzero) digits is 1244160, while the sum is 46.

The spelling of 2216236328065 in words is "two trillion, two hundred sixteen billion, two hundred thirty-six million, three hundred twenty-eight thousand, sixty-five".