223808826209 has 2 divisors, whose sum is σ = 223808826210. Its totient is φ = 223808826208.

The previous prime is 223808826161. The next prime is 223808826217. The reversal of 223808826209 is 902628808322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150313616209 + 73495210000 = 387703^2 + 271100^2 .

It is a cyclic number.

It is not a de Polignac number, because 223808826209 - 2⁸ = 223808825953 is a prime.

It is a super-3 number, since 3×223808826209³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (223808126209) 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, 111904413104 + 111904413105.

It is an arithmetic number, because the mean of its divisors is an integer number (111904413105).

Almost surely, 2^223808826209 is an apocalyptic number.

It is an amenable number.

223808826209 is a deficient number, since it is larger than the sum of its proper divisors (1).

223808826209 is an equidigital number, since it uses as much as digits as its factorization.

223808826209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1327104, while the sum is 50.

The spelling of 223808826209 in words is "two hundred twenty-three billion, eight hundred eight million, eight hundred twenty-six thousand, two hundred nine".