223665035809 has 2 divisors, whose sum is σ = 223665035810. Its totient is φ = 223665035808.

The previous prime is 223665035807. The next prime is 223665035837. The reversal of 223665035809 is 908530566322.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166706440209 + 56958595600 = 408297^2 + 238660^2 .

It is a cyclic number.

It is not a de Polignac number, because 223665035809 - 2¹ = 223665035807 is a prime.

Together with 223665035807, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (223665035801) 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, 111832517904 + 111832517905.

It is an arithmetic number, because the mean of its divisors is an integer number (111832517905).

Almost surely, 2^223665035809 is an apocalyptic number.

It is an amenable number.

223665035809 is a deficient number, since it is larger than the sum of its proper divisors (1).

223665035809 is an equidigital number, since it uses as much as digits as its factorization.

223665035809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2332800, while the sum is 49.

The spelling of 223665035809 in words is "two hundred twenty-three billion, six hundred sixty-five million, thirty-five thousand, eight hundred nine".