16808006861 has 8 divisors (see below), whose sum is σ = 17785816704. Its totient is φ = 15850782640.

The previous prime is 16808006833. The next prime is 16808006923. The reversal of 16808006861 is 16860080861.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16808006861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16808006821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5144726 + ... + 5147991.

It is an arithmetic number, because the mean of its divisors is an integer number (2223227088).

Almost surely, 2^16808006861 is an apocalyptic number.

It is an amenable number.

16808006861 is a deficient number, since it is larger than the sum of its proper divisors (977809843).

16808006861 is a wasteful number, since it uses less digits than its factorization.

16808006861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10292811.

The product of its (nonzero) digits is 110592, while the sum is 44.

The spelling of 16808006861 in words is "sixteen billion, eight hundred eight million, six thousand, eight hundred sixty-one".