4216665617 has 2 divisors, whose sum is σ = 4216665618. Its totient is φ = 4216665616.

The previous prime is 4216665437. The next prime is 4216665641. The reversal of 4216665617 is 7165666124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4056288721 + 160376896 = 63689^2 + 12664^2 .

It is a cyclic number.

It is not a de Polignac number, because 4216665617 - 2⁸ = 4216665361 is a prime.

It is not a weakly prime, because it can be changed into another prime (4216665667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2108332808 + 2108332809.

It is an arithmetic number, because the mean of its divisors is an integer number (2108332809).

Almost surely, 2^4216665617 is an apocalyptic number.

It is an amenable number.

4216665617 is a deficient number, since it is larger than the sum of its proper divisors (1).

4216665617 is an equidigital number, since it uses as much as digits as its factorization.

4216665617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 44.

The square root of 4216665617 is about 64935.8577135930. The cubic root of 4216665617 is about 1615.5598600826.

The spelling of 4216665617 in words is "four billion, two hundred sixteen million, six hundred sixty-five thousand, six hundred seventeen".