5664041720609 has 2 divisors, whose sum is σ = 5664041720610. Its totient is φ = 5664041720608.

The previous prime is 5664041720581. The next prime is 5664041720633. The reversal of 5664041720609 is 9060271404665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5605070455009 + 58971265600 = 2367503^2 + 242840^2 .

It is a cyclic number.

It is not a de Polignac number, because 5664041720609 - 2²⁰ = 5664040672033 is a prime.

It is a super-2 number, since 2×5664041720609² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5664041720009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2832020860304 + 2832020860305.

It is an arithmetic number, because the mean of its divisors is an integer number (2832020860305).

Almost surely, 2^{5664041720609} is an apocalyptic number.

It is an amenable number.

5664041720609 is a deficient number, since it is larger than the sum of its proper divisors (1).

5664041720609 is an equidigital number, since it uses as much as digits as its factorization.

5664041720609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 5664041720609 in words is "five trillion, six hundred sixty-four billion, forty-one million, seven hundred twenty thousand, six hundred nine".