4224523661 has 2 divisors, whose sum is σ = 4224523662. Its totient is φ = 4224523660.

The previous prime is 4224523619. The next prime is 4224523663. The reversal of 4224523661 is 1663254224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4042543561 + 181980100 = 63581^2 + 13490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4224523661 is a prime.

It is a Sophie Germain prime.

Together with 4224523663, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4224523663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2112261830 + 2112261831.

It is an arithmetic number, because the mean of its divisors is an integer number (2112261831).

Almost surely, 2^4224523661 is an apocalyptic number.

It is an amenable number.

4224523661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4224523661 is an equidigital number, since it uses as much as digits as its factorization.

4224523661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 35.

The square root of 4224523661 is about 64996.3357505637. The cubic root of 4224523661 is about 1616.5628059870.

Adding to 4224523661 its reverse (1663254224), we get a palindrome (5887777885).

The spelling of 4224523661 in words is "four billion, two hundred twenty-four million, five hundred twenty-three thousand, six hundred sixty-one".