6663444043 has 2 divisors, whose sum is σ = 6663444044. Its totient is φ = 6663444042.

The previous prime is 6663444031. The next prime is 6663444143. The reversal of 6663444043 is 3404443666.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6663444043 - 2²⁵ = 6629889611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6663443987 and 6663444005.

It is not a weakly prime, because it can be changed into another prime (6663444013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3331722021 + 3331722022.

It is an arithmetic number, because the mean of its divisors is an integer number (3331722022).

Almost surely, 2^6663444043 is an apocalyptic number.

6663444043 is a deficient number, since it is larger than the sum of its proper divisors (1).

6663444043 is an equidigital number, since it uses as much as digits as its factorization.

6663444043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 40.

The square root of 6663444043 is about 81629.9212482776. The cubic root of 6663444043 is about 1881.7687483864.

The spelling of 6663444043 in words is "six billion, six hundred sixty-three million, four hundred forty-four thousand, forty-three".