16668350018517 has 16 divisors (see below), whose sum is σ = 22507296977088. Its totient is φ = 10970997555840.

The previous prime is 16668350018491. The next prime is 16668350018519. The reversal of 16668350018517 is 71581005386661.

It is not a de Polignac number, because 16668350018517 - 2¹⁰ = 16668350017493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16668350018519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22046584 + ... + 22790097.

It is an arithmetic number, because the mean of its divisors is an integer number (1406706061068).

Almost surely, 2^{16668350018517} is an apocalyptic number.

It is an amenable number.

16668350018517 is a deficient number, since it is larger than the sum of its proper divisors (5838946958571).

16668350018517 is a wasteful number, since it uses less digits than its factorization.

16668350018517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44838260.

The product of its (nonzero) digits is 7257600, while the sum is 57.

The spelling of 16668350018517 in words is "sixteen trillion, six hundred sixty-eight billion, three hundred fifty million, eighteen thousand, five hundred seventeen".