16614436609 has 9 divisors (see below), whose sum is σ = 16741326441. Its totient is φ = 16488504240.

The previous prime is 16614436591. The next prime is 16614436633. The reversal of 16614436609 is 90663441661.

The square root of 16614436609 is 128897.

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

16614436609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3128724225 + 13485712384 = 55935^2 + 116128^2 .

It is not a de Polignac number, because 16614436609 - 2¹¹ = 16614434561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16614436649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 20236419 + ... + 20237239.

Almost surely, 2^16614436609 is an apocalyptic number.

16614436609 is the 128897-th square number.

16614436609 is the 64449-th centered octagonal number.

It is an amenable number.

16614436609 is a deficient number, since it is larger than the sum of its proper divisors (126889832).

16614436609 is an frugal number, since it uses more digits than its factorization.

16614436609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1956 (or 978 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 46.

The spelling of 16614436609 in words is "sixteen billion, six hundred fourteen million, four hundred thirty-six thousand, six hundred nine".