16771027009 has 27 divisors (see below), whose sum is σ = 18839033577. Its totient is φ = 14918745600.

The previous prime is 16771026953. The next prime is 16771027043. The reversal of 16771027009 is 90072017761.

The square root of 16771027009 is 129503.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 9877378225 + 6893648784 = 99385^2 + 83028^2 .

It is not a de Polignac number, because 16771027009 - 2¹¹ = 16771024961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16771027099) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 86896417 + ... + 86896609.

Almost surely, 2^16771027009 is an apocalyptic number.

16771027009 is the 129503-rd square number.

16771027009 is the 64752-nd centered octagonal number.

It is an amenable number.

16771027009 is a deficient number, since it is larger than the sum of its proper divisors (2068006568).

16771027009 is an frugal number, since it uses more digits than its factorization.

16771027009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530 (or 265 counting only the distinct ones).

The product of its (nonzero) digits is 37044, while the sum is 40.

The spelling of 16771027009 in words is "sixteen billion, seven hundred seventy-one million, twenty-seven thousand, nine".