223651664069 has 2 divisors, whose sum is σ = 223651664070. Its totient is φ = 223651664068.

The previous prime is 223651663943. The next prime is 223651664083. The reversal of 223651664069 is 960466156322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130998391969 + 92653272100 = 361937^2 + 304390^2 .

It is a cyclic number.

It is not a de Polignac number, because 223651664069 - 2³² = 219356696773 is a prime.

It is a super-2 number, since 2×223651664069² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223651664099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111825832034 + 111825832035.

It is an arithmetic number, because the mean of its divisors is an integer number (111825832035).

Almost surely, 2^223651664069 is an apocalyptic number.

It is an amenable number.

223651664069 is a deficient number, since it is larger than the sum of its proper divisors (1).

223651664069 is an equidigital number, since it uses as much as digits as its factorization.

223651664069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2799360, while the sum is 50.

The spelling of 223651664069 in words is "two hundred twenty-three billion, six hundred fifty-one million, six hundred sixty-four thousand, sixty-nine".