6647249307043 has 2 divisors, whose sum is σ = 6647249307044. Its totient is φ = 6647249307042.

The previous prime is 6647249307037. The next prime is 6647249307089. The reversal of 6647249307043 is 3407039427466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6647249307043 - 2¹⁷ = 6647249175971 is a prime.

It is not a weakly prime, because it can be changed into another prime (6647241307043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3323624653521 + 3323624653522.

It is an arithmetic number, because the mean of its divisors is an integer number (3323624653522).

Almost surely, 2^{6647249307043} is an apocalyptic number.

6647249307043 is a deficient number, since it is larger than the sum of its proper divisors (1).

6647249307043 is an equidigital number, since it uses as much as digits as its factorization.

6647249307043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18289152, while the sum is 55.

The spelling of 6647249307043 in words is "six trillion, six hundred forty-seven billion, two hundred forty-nine million, three hundred seven thousand, forty-three".