16660327650717 has 16 divisors (see below), whose sum is σ = 22323419614080. Its totient is φ = 11052121554432.

The previous prime is 16660327650677. The next prime is 16660327650739. The reversal of 16660327650717 is 71705672306661.

It is a happy number.

It is not a de Polignac number, because 16660327650717 - 2¹² = 16660327646621 is a prime.

It is a super-2 number, since 2×16660327650717² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16660327650787) 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 15 ways as a sum of consecutive naturals, for example, 6554428 + ... + 8733909.

It is an arithmetic number, because the mean of its divisors is an integer number (1395213725880).

Almost surely, 2^{16660327650717} is an apocalyptic number.

It is an amenable number.

16660327650717 is a deficient number, since it is larger than the sum of its proper divisors (5663091963363).

16660327650717 is a wasteful number, since it uses less digits than its factorization.

16660327650717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15290132.

The product of its (nonzero) digits is 13335840, while the sum is 57.

The spelling of 16660327650717 in words is "sixteen trillion, six hundred sixty billion, three hundred twenty-seven million, six hundred fifty thousand, seven hundred seventeen".