23663664169 has 2 divisors, whose sum is σ = 23663664170. Its totient is φ = 23663664168.

The previous prime is 23663664119. The next prime is 23663664173. The reversal of 23663664169 is 96146636632.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23459517225 + 204146944 = 153165^2 + 14288^2 .

It is a cyclic number.

It is not a de Polignac number, because 23663664169 - 2⁷ = 23663664041 is a prime.

It is a super-2 number, since 2×23663664169² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23663664109) 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, 11831832084 + 11831832085.

It is an arithmetic number, because the mean of its divisors is an integer number (11831832085).

Almost surely, 2^23663664169 is an apocalyptic number.

It is an amenable number.

23663664169 is a deficient number, since it is larger than the sum of its proper divisors (1).

23663664169 is an equidigital number, since it uses as much as digits as its factorization.

23663664169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5038848, while the sum is 52.

The spelling of 23663664169 in words is "twenty-three billion, six hundred sixty-three million, six hundred sixty-four thousand, one hundred sixty-nine".