663228651222041 has 2 divisors, whose sum is σ = 663228651222042. Its totient is φ = 663228651222040.

The previous prime is 663228651222019. The next prime is 663228651222047. The reversal of 663228651222041 is 140222156822366.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 332843353560025 + 330385297662016 = 18243995^2 + 18176504^2 .

It is a cyclic number.

It is not a de Polignac number, because 663228651222041 - 2⁴² = 658830604710937 is a prime.

It is not a weakly prime, because it can be changed into another prime (663228651222047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331614325611020 + 331614325611021.

It is an arithmetic number, because the mean of its divisors is an integer number (331614325611021).

Almost surely, 2^{663228651222041} is an apocalyptic number.

It is an amenable number.

663228651222041 is a deficient number, since it is larger than the sum of its proper divisors (1).

663228651222041 is an equidigital number, since it uses as much as digits as its factorization.

663228651222041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3317760, while the sum is 50.

The spelling of 663228651222041 in words is "six hundred sixty-three trillion, two hundred twenty-eight billion, six hundred fifty-one million, two hundred twenty-two thousand, forty-one".