6446680318043 has 4 divisors (see below), whose sum is σ = 7367634649200. Its totient is φ = 5525725986888.

The previous prime is 6446680318009. The next prime is 6446680318051. The reversal of 6446680318043 is 3408130866446.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6446680318043 - 2²⁰ = 6446679269467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6446680318063) 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 in 3 ways as a sum of consecutive naturals, for example, 460477165568 + ... + 460477165581.

It is an arithmetic number, because the mean of its divisors is an integer number (1841908662300).

Almost surely, 2^{6446680318043} is an apocalyptic number.

6446680318043 is a deficient number, since it is larger than the sum of its proper divisors (920954331157).

6446680318043 is an equidigital number, since it uses as much as digits as its factorization.

6446680318043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920954331156.

The product of its (nonzero) digits is 7962624, while the sum is 53.

The spelling of 6446680318043 in words is "six trillion, four hundred forty-six billion, six hundred eighty million, three hundred eighteen thousand, forty-three".