16668350143 has 2 divisors, whose sum is σ = 16668350144. Its totient is φ = 16668350142.

The previous prime is 16668350141. The next prime is 16668350147. The reversal of 16668350143 is 34105386661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16668350143 - 2¹ = 16668350141 is a prime.

Together with 16668350141, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 16668350143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16668350141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8334175071 + 8334175072.

It is an arithmetic number, because the mean of its divisors is an integer number (8334175072).

Almost surely, 2^16668350143 is an apocalyptic number.

16668350143 is a deficient number, since it is larger than the sum of its proper divisors (1).

16668350143 is an equidigital number, since it uses as much as digits as its factorization.

16668350143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 16668350143 in words is "sixteen billion, six hundred sixty-eight million, three hundred fifty thousand, one hundred forty-three".