16805934207 has 24 divisors (see below), whose sum is σ = 25558041600. Its totient is φ = 10612131408.

The previous prime is 16805934191. The next prime is 16805934227. The reversal of 16805934207 is 70243950861.

16805934207 is a `hidden beast` number, since 16 + 8 + 0 + 593 + 42 + 0 + 7 = 666.

It is not a de Polignac number, because 16805934207 - 2⁴ = 16805934191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16805934227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1626018 + ... + 1636320.

It is an arithmetic number, because the mean of its divisors is an integer number (1064918400).

It is a 1-persistent number, because it is pandigital, but 2⋅16805934207 = 33611868414 is not.

Almost surely, 2^16805934207 is an apocalyptic number.

16805934207 is a deficient number, since it is larger than the sum of its proper divisors (8752107393).

16805934207 is a wasteful number, since it uses less digits than its factorization.

16805934207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19867 (or 19864 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 16805934207 in words is "sixteen billion, eight hundred five million, nine hundred thirty-four thousand, two hundred seven".