16660327650667 has 4 divisors (see below), whose sum is σ = 16660388910256. Its totient is φ = 16660266391080.

The previous prime is 16660327650643. The next prime is 16660327650677. The reversal of 16660327650667 is 76605672306661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16660327650667 - 2³⁵ = 16625967912299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16660327650677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30220023 + ... + 30766384.

It is an arithmetic number, because the mean of its divisors is an integer number (4165097227564).

Almost surely, 2^{16660327650667} is an apocalyptic number.

16660327650667 is a deficient number, since it is larger than the sum of its proper divisors (61259589).

16660327650667 is an equidigital number, since it uses as much as digits as its factorization.

16660327650667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61259588.

The product of its (nonzero) digits is 68584320, while the sum is 61.

The spelling of 16660327650667 in words is "sixteen trillion, six hundred sixty billion, three hundred twenty-seven million, six hundred fifty thousand, six hundred sixty-seven".