16287706673 has 6 divisors (see below), whose sum is σ = 18946924146. Its totient is φ = 13960891392.

The previous prime is 16287706651. The next prime is 16287706739. The reversal of 16287706673 is 37660778261.

It can be written as a sum of positive squares in only one way, i.e., 15962553649 + 325153024 = 126343^2 + 18032^2 .

It is a de Polignac number, because none of the positive numbers 2^k-16287706673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16287706573) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 166201040 + ... + 166201137.

It is an arithmetic number, because the mean of its divisors is an integer number (3157820691).

Almost surely, 2^16287706673 is an apocalyptic number.

It is an amenable number.

16287706673 is a deficient number, since it is larger than the sum of its proper divisors (2659217473).

16287706673 is an equidigital number, since it uses as much as digits as its factorization.

16287706673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332402191 (or 332402184 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 53.

The spelling of 16287706673 in words is "sixteen billion, two hundred eighty-seven million, seven hundred six thousand, six hundred seventy-three".