16680867841 has 16 divisors (see below), whose sum is σ = 18844839936. Its totient is φ = 14627970000.

The previous prime is 16680867821. The next prime is 16680867881. The reversal of 16680867841 is 14876808661.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-16680867841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16680867821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27406 + ... + 184696.

It is an arithmetic number, because the mean of its divisors is an integer number (1177802496).

Almost surely, 2^16680867841 is an apocalyptic number.

16680867841 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16680867841 is a deficient number, since it is larger than the sum of its proper divisors (2163972095).

16680867841 is a wasteful number, since it uses less digits than its factorization.

16680867841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157644.

The product of its (nonzero) digits is 3096576, while the sum is 55.

The spelling of 16680867841 in words is "sixteen billion, six hundred eighty million, eight hundred sixty-seven thousand, eight hundred forty-one".