16728794811 has 12 divisors (see below), whose sum is σ = 25058771192. Its totient is φ = 11152529712.

The previous prime is 16728794707. The next prime is 16728794821. The reversal of 16728794811 is 11849782761.

16728794811 is a `hidden beast` number, since 16 + 72 + 87 + 9 + 481 + 1 = 666.

It is not a de Polignac number, because 16728794811 - 2¹⁰ = 16728793787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16728794821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34421146 + ... + 34421631.

Almost surely, 2^16728794811 is an apocalyptic number.

16728794811 is a deficient number, since it is larger than the sum of its proper divisors (8329976381).

16728794811 is an frugal number, since it uses more digits than its factorization.

16728794811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68842792 (or 68842780 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 54.

The spelling of 16728794811 in words is "sixteen billion, seven hundred twenty-eight million, seven hundred ninety-four thousand, eight hundred eleven".