41664433649 has 2 divisors, whose sum is σ = 41664433650. Its totient is φ = 41664433648.

The previous prime is 41664433637. The next prime is 41664433703. The reversal of 41664433649 is 94633446614.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39042993649 + 2621440000 = 197593^2 + 51200^2 .

It is a cyclic number.

It is not a de Polignac number, because 41664433649 - 2²⁰ = 41663385073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 41664433597 and 41664433606.

It is not a weakly prime, because it can be changed into another prime (41664433609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20832216824 + 20832216825.

It is an arithmetic number, because the mean of its divisors is an integer number (20832216825).

Almost surely, 2^41664433649 is an apocalyptic number.

It is an amenable number.

41664433649 is a deficient number, since it is larger than the sum of its proper divisors (1).

41664433649 is an equidigital number, since it uses as much as digits as its factorization.

41664433649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4478976, while the sum is 50.

The spelling of 41664433649 in words is "forty-one billion, six hundred sixty-four million, four hundred thirty-three thousand, six hundred forty-nine".