16668335000231 has 2 divisors, whose sum is σ = 16668335000232. Its totient is φ = 16668335000230.

The previous prime is 16668335000173. The next prime is 16668335000237. The reversal of 16668335000231 is 13200053386661.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (13200053386661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16668335000231 - 2³⁰ = 16667261258407 is a prime.

It is a super-2 number, since 2×16668335000231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16668335000237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8334167500115 + 8334167500116.

It is an arithmetic number, because the mean of its divisors is an integer number (8334167500116).

Almost surely, 2^{16668335000231} is an apocalyptic number.

16668335000231 is a deficient number, since it is larger than the sum of its proper divisors (1).

16668335000231 is an equidigital number, since it uses as much as digits as its factorization.

16668335000231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 44.

Adding to 16668335000231 its reverse (13200053386661), we get a palindrome (29868388386892).

The spelling of 16668335000231 in words is "sixteen trillion, six hundred sixty-eight billion, three hundred thirty-five million, two hundred thirty-one", and thus it is an aban number.