16808845897 has 8 divisors (see below), whose sum is σ = 17850419496. Its totient is φ = 15773140992.

The previous prime is 16808845883. The next prime is 16808845909. The reversal of 16808845897 is 79854880861.

It is a happy number.

16808845897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4403118736 + 12405727161 = 66356^2 + 111381^2 .

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 16808845897 - 2²⁷ = 16674628169 is a prime.

It is a super-4 number, since 4×16808845897⁴ (a number of 42 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16808845877) 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, 1461268 + ... + 1472725.

It is an arithmetic number, because the mean of its divisors is an integer number (2231302437).

Almost surely, 2^16808845897 is an apocalyptic number.

16808845897 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16808845897 is a deficient number, since it is larger than the sum of its proper divisors (1041573599).

16808845897 is a wasteful number, since it uses less digits than its factorization.

16808845897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2934347.

The product of its (nonzero) digits is 30965760, while the sum is 64.

The spelling of 16808845897 in words is "sixteen billion, eight hundred eight million, eight hundred forty-five thousand, eight hundred ninety-seven".