16660663206047 has 8 divisors (see below), whose sum is σ = 19040786890752. Its totient is φ = 14280546756600.

The previous prime is 16660663206037. The next prime is 16660663206049. The reversal of 16660663206047 is 74060236606661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16660663206047 - 2²⁰ = 16660662157471 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16660663206047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16660663206049) 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 7 ways as a sum of consecutive naturals, for example, 4675022 + ... + 7428132.

It is an arithmetic number, because the mean of its divisors is an integer number (2380098361344).

Almost surely, 2^{16660663206047} is an apocalyptic number.

16660663206047 is a deficient number, since it is larger than the sum of its proper divisors (2380123684705).

16660663206047 is an equidigital number, since it uses as much as digits as its factorization.

16660663206047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3617629.

The product of its (nonzero) digits is 7838208, while the sum is 53.

The spelling of 16660663206047 in words is "sixteen trillion, six hundred sixty billion, six hundred sixty-three million, two hundred six thousand, forty-seven".