5616605209 has 2 divisors, whose sum is σ = 5616605210. Its totient is φ = 5616605208.

The previous prime is 5616605177. The next prime is 5616605227. The reversal of 5616605209 is 9025066165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3200391184 + 2416214025 = 56572^2 + 49155^2 .

It is a cyclic number.

It is not a de Polignac number, because 5616605209 - 2⁵ = 5616605177 is a prime.

It is not a weakly prime, because it can be changed into another prime (5616605009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2808302604 + 2808302605.

It is an arithmetic number, because the mean of its divisors is an integer number (2808302605).

Almost surely, 2^5616605209 is an apocalyptic number.

It is an amenable number.

5616605209 is a deficient number, since it is larger than the sum of its proper divisors (1).

5616605209 is an equidigital number, since it uses as much as digits as its factorization.

5616605209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 5616605209 is about 74944.0138303254. The cubic root of 5616605209 is about 1777.5614895089.

The spelling of 5616605209 in words is "five billion, six hundred sixteen million, six hundred five thousand, two hundred nine".