16678998905675 has 6 divisors (see below), whose sum is σ = 20681958643068. Its totient is φ = 13343199124520.

The previous prime is 16678998905617. The next prime is 16678998905687. The reversal of 16678998905675 is 57650989987661.

It is a de Polignac number, because none of the positive numbers 2^k-16678998905675 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 333579978089 + ... + 333579978138.

It is an arithmetic number, because the mean of its divisors is an integer number (3446993107178).

Almost surely, 2^{16678998905675} is an apocalyptic number.

16678998905675 is a deficient number, since it is larger than the sum of its proper divisors (4002959737393).

16678998905675 is an equidigital number, since it uses as much as digits as its factorization.

16678998905675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667159956237 (or 667159956232 counting only the distinct ones).

The product of its (nonzero) digits is 12345177600, while the sum is 86.

The spelling of 16678998905675 in words is "sixteen trillion, six hundred seventy-eight billion, nine hundred ninety-eight million, nine hundred five thousand, six hundred seventy-five".