16684750819803 has 18 divisors (see below), whose sum is σ = 24452696525236. Its totient is φ = 10111923027800.

The previous prime is 16684750819799. The next prime is 16684750819817. The reversal of 16684750819803 is 30891805748661.

It is a happy number.

It is not a de Polignac number, because 16684750819803 - 2² = 16684750819799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16684750819003) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 77716738 + ... + 77931128.

Almost surely, 2^{16684750819803} is an apocalyptic number.

16684750819803 is a deficient number, since it is larger than the sum of its proper divisors (7767945705433).

16684750819803 is an frugal number, since it uses more digits than its factorization.

16684750819803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428807 (or 214405 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 66.

The spelling of 16684750819803 in words is "sixteen trillion, six hundred eighty-four billion, seven hundred fifty million, eight hundred nineteen thousand, eight hundred three".