16616179999 has 2 divisors, whose sum is σ = 16616180000. Its totient is φ = 16616179998.

The previous prime is 16616179997. The next prime is 16616180107. The reversal of 16616179999 is 99997161661.

It is a weak prime.

It is an emirp because it is prime and its reverse (99997161661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16616179999 - 2¹ = 16616179997 is a prime.

Together with 16616179997, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 16616179999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16616179997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8308089999 + 8308090000.

It is an arithmetic number, because the mean of its divisors is an integer number (8308090000).

Almost surely, 2^16616179999 is an apocalyptic number.

16616179999 is a deficient number, since it is larger than the sum of its proper divisors (1).

16616179999 is an equidigital number, since it uses as much as digits as its factorization.

16616179999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9920232, while the sum is 64.

The spelling of 16616179999 in words is "sixteen billion, six hundred sixteen million, one hundred seventy-nine thousand, nine hundred ninety-nine".