223643889464669 has 2 divisors, whose sum is σ = 223643889464670. Its totient is φ = 223643889464668.

The previous prime is 223643889464647. The next prime is 223643889464707. The reversal of 223643889464669 is 966464988346322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167310008216569 + 56333881248100 = 12934837^2 + 7505590^2 .

It is a cyclic number.

It is not a de Polignac number, because 223643889464669 - 2³² = 223639594497373 is a prime.

It is a super-2 number, since 2×223643889464669² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 223643889464593 and 223643889464602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223643889464609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111821944732334 + 111821944732335.

It is an arithmetic number, because the mean of its divisors is an integer number (111821944732335).

Almost surely, 2^{223643889464669} is an apocalyptic number.

It is an amenable number.

223643889464669 is a deficient number, since it is larger than the sum of its proper divisors (1).

223643889464669 is an equidigital number, since it uses as much as digits as its factorization.

223643889464669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15479341056, while the sum is 80.

The spelling of 223643889464669 in words is "two hundred twenty-three trillion, six hundred forty-three billion, eight hundred eighty-nine million, four hundred sixty-four thousand, six hundred sixty-nine".