63224152661 has 2 divisors, whose sum is σ = 63224152662. Its totient is φ = 63224152660.

The previous prime is 63224152637. The next prime is 63224152679. The reversal of 63224152661 is 16625142236.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63217547761 + 6604900 = 251431^2 + 2570^2 .

It is a cyclic number.

It is not a de Polignac number, because 63224152661 - 2¹⁸ = 63223890517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63224152681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31612076330 + 31612076331.

It is an arithmetic number, because the mean of its divisors is an integer number (31612076331).

Almost surely, 2^63224152661 is an apocalyptic number.

It is an amenable number.

63224152661 is a deficient number, since it is larger than the sum of its proper divisors (1).

63224152661 is an equidigital number, since it uses as much as digits as its factorization.

63224152661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 38.

Adding to 63224152661 its reverse (16625142236), we get a palindrome (79849294897).

The spelling of 63224152661 in words is "sixty-three billion, two hundred twenty-four million, one hundred fifty-two thousand, six hundred sixty-one".