16662110467441 has 2 divisors, whose sum is σ = 16662110467442. Its totient is φ = 16662110467440.

The previous prime is 16662110467421. The next prime is 16662110467463. The reversal of 16662110467441 is 14476401126661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16434137641216 + 227972826225 = 4053904^2 + 477465^2 .

It is a cyclic number.

It is not a de Polignac number, because 16662110467441 - 2¹³ = 16662110459249 is a prime.

It is a super-3 number, since 3×16662110467441³ (a number of 41 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (16662110467421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8331055233720 + 8331055233721.

It is an arithmetic number, because the mean of its divisors is an integer number (8331055233721).

Almost surely, 2^{16662110467441} is an apocalyptic number.

It is an amenable number.

16662110467441 is a deficient number, since it is larger than the sum of its proper divisors (1).

16662110467441 is an equidigital number, since it uses as much as digits as its factorization.

16662110467441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 16662110467441 in words is "sixteen trillion, six hundred sixty-two billion, one hundred ten million, four hundred sixty-seven thousand, four hundred forty-one".