16662361699343 has 2 divisors, whose sum is σ = 16662361699344. Its totient is φ = 16662361699342.

The previous prime is 16662361699309. The next prime is 16662361699393. The reversal of 16662361699343 is 34399616326661.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16662361699343 - 2²⁸ = 16662093263887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16662361699343.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16662361699303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8331180849671 + 8331180849672.

It is an arithmetic number, because the mean of its divisors is an integer number (8331180849672).

Almost surely, 2^{16662361699343} is an apocalyptic number.

16662361699343 is a deficient number, since it is larger than the sum of its proper divisors (1).

16662361699343 is an equidigital number, since it uses as much as digits as its factorization.

16662361699343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136048896, while the sum is 65.

The spelling of 16662361699343 in words is "sixteen trillion, six hundred sixty-two billion, three hundred sixty-one million, six hundred ninety-nine thousand, three hundred forty-three".