16668516668335 has 16 divisors (see below), whose sum is σ = 24062821056000. Its totient is φ = 10828269474336.

The previous prime is 16668516668333. The next prime is 16668516668383. The reversal of 16668516668335 is 53386661586661.

It is a cyclic number.

It is not a de Polignac number, because 16668516668335 - 2¹ = 16668516668333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16668516668333) 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, 12532718635 + ... + 12532719964.

It is an arithmetic number, because the mean of its divisors is an integer number (1503926316000).

Almost surely, 2^{16668516668335} is an apocalyptic number.

16668516668335 is a deficient number, since it is larger than the sum of its proper divisors (7394304387665).

16668516668335 is a wasteful number, since it uses less digits than its factorization.

16668516668335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25065438630.

The product of its digits is 671846400, while the sum is 70.

The spelling of 16668516668335 in words is "sixteen trillion, six hundred sixty-eight billion, five hundred sixteen million, six hundred sixty-eight thousand, three hundred thirty-five".