16808417305 has 8 divisors (see below), whose sum is σ = 20189520000. Its totient is φ = 13433787696.

The previous prime is 16808417291. The next prime is 16808417309. The reversal of 16808417305 is 50371480861.

16808417305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16808417305 - 2¹⁹ = 16807893017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16808417309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1612555 + ... + 1622944.

It is an arithmetic number, because the mean of its divisors is an integer number (2523690000).

Almost surely, 2^16808417305 is an apocalyptic number.

It is an amenable number.

16808417305 is a deficient number, since it is larger than the sum of its proper divisors (3381102695).

16808417305 is a wasteful number, since it uses less digits than its factorization.

16808417305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3236543.

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 16808417305 in words is "sixteen billion, eight hundred eight million, four hundred seventeen thousand, three hundred five".