16668029089 has 2 divisors, whose sum is σ = 16668029090. Its totient is φ = 16668029088.

The previous prime is 16668029039. The next prime is 16668029173. The reversal of 16668029089 is 98092086661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16129000000 + 539029089 = 127000^2 + 23217^2 .

It is an emirp because it is prime and its reverse (98092086661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16668029089 - 2⁹ = 16668028577 is a prime.

It is not a weakly prime, because it can be changed into another prime (16668029039) 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, 8334014544 + 8334014545.

It is an arithmetic number, because the mean of its divisors is an integer number (8334014545).

Almost surely, 2^16668029089 is an apocalyptic number.

It is an amenable number.

16668029089 is a deficient number, since it is larger than the sum of its proper divisors (1).

16668029089 is an equidigital number, since it uses as much as digits as its factorization.

16668029089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2239488, while the sum is 55.

The spelling of 16668029089 in words is "sixteen billion, six hundred sixty-eight million, twenty-nine thousand, eighty-nine".