16678560443 has 2 divisors, whose sum is σ = 16678560444. Its totient is φ = 16678560442.

The previous prime is 16678560439. The next prime is 16678560461. The reversal of 16678560443 is 34406587661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16678560443 - 2² = 16678560439 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 16678560391 and 16678560400.

It is not a weakly prime, because it can be changed into another prime (16678590443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8339280221 + 8339280222.

It is an arithmetic number, because the mean of its divisors is an integer number (8339280222).

Almost surely, 2^16678560443 is an apocalyptic number.

16678560443 is a deficient number, since it is larger than the sum of its proper divisors (1).

16678560443 is an equidigital number, since it uses as much as digits as its factorization.

16678560443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2903040, while the sum is 50.

The spelling of 16678560443 in words is "sixteen billion, six hundred seventy-eight million, five hundred sixty thousand, four hundred forty-three".