16668350017 has 4 divisors (see below), whose sum is σ = 18183654576. Its totient is φ = 15153045460.

The previous prime is 16668350011. The next prime is 16668350051. The reversal of 16668350017 is 71005386661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16668350017 - 2⁷ = 16668349889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16668350011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757652263 + ... + 757652284.

It is an arithmetic number, because the mean of its divisors is an integer number (4545913644).

Almost surely, 2^16668350017 is an apocalyptic number.

It is an amenable number.

16668350017 is a deficient number, since it is larger than the sum of its proper divisors (1515304559).

16668350017 is a wasteful number, since it uses less digits than its factorization.

16668350017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515304558.

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 16668350017 in words is "sixteen billion, six hundred sixty-eight million, three hundred fifty thousand, seventeen".