16680636776 has 32 divisors (see below), whose sum is σ = 33610256640. Its totient is φ = 7732547328.

The previous prime is 16680636773. The next prime is 16680636781. The reversal of 16680636776 is 67763608661.

16680636776 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (16680636773) 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, 906200 + ... + 924423.

It is an arithmetic number, because the mean of its divisors is an integer number (1050320520).

Almost surely, 2^16680636776 is an apocalyptic number.

It is an amenable number.

16680636776 is an abundant number, since it is smaller than the sum of its proper divisors (16929619864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16680636776 is a wasteful number, since it uses less digits than its factorization.

16680636776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830713 (or 1830709 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 56.

The spelling of 16680636776 in words is "sixteen billion, six hundred eighty million, six hundred thirty-six thousand, seven hundred seventy-six".