223665406342247 has 2 divisors, whose sum is σ = 223665406342248. Its totient is φ = 223665406342246.

The previous prime is 223665406342241. The next prime is 223665406342331. The reversal of 223665406342247 is 742243604566322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 223665406342247 - 2²⁶ = 223665339233383 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 223665406342192 and 223665406342201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223665406342241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111832703171123 + 111832703171124.

It is an arithmetic number, because the mean of its divisors is an integer number (111832703171124).

Almost surely, 2^{223665406342247} is an apocalyptic number.

223665406342247 is a deficient number, since it is larger than the sum of its proper divisors (1).

223665406342247 is an equidigital number, since it uses as much as digits as its factorization.

223665406342247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69672960, while the sum is 56.

The spelling of 223665406342247 in words is "two hundred twenty-three trillion, six hundred sixty-five billion, four hundred six million, three hundred forty-two thousand, two hundred forty-seven".