16662110459249 has 2 divisors, whose sum is σ = 16662110459250. Its totient is φ = 16662110459248.

The previous prime is 16662110459227. The next prime is 16662110459329. The reversal of 16662110459249 is 94295401126661.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16518209347600 + 143901111649 = 4064260^2 + 379343^2 .

It is a cyclic number.

It is not a de Polignac number, because 16662110459249 - 2⁸ = 16662110458993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16662110459194 and 16662110459203.

It is not a weakly prime, because it can be changed into another prime (16662110479249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8331055229624 + 8331055229625.

It is an arithmetic number, because the mean of its divisors is an integer number (8331055229625).

Almost surely, 2^{16662110459249} is an apocalyptic number.

It is an amenable number.

16662110459249 is a deficient number, since it is larger than the sum of its proper divisors (1).

16662110459249 is an equidigital number, since it uses as much as digits as its factorization.

16662110459249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5598720, while the sum is 56.

The spelling of 16662110459249 in words is "sixteen trillion, six hundred sixty-two billion, one hundred ten million, four hundred fifty-nine thousand, two hundred forty-nine".