16442617309369 has 2 divisors, whose sum is σ = 16442617309370. Its totient is φ = 16442617309368.

The previous prime is 16442617309357. The next prime is 16442617309379. The reversal of 16442617309369 is 96390371624461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8915479374400 + 7527137934969 = 2985880^2 + 2743563^2 .

It is a cyclic number.

It is not a de Polignac number, because 16442617309369 - 2²⁵ = 16442583754937 is a prime.

It is a super-3 number, since 3×16442617309369³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (16442617309379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8221308654684 + 8221308654685.

It is an arithmetic number, because the mean of its divisors is an integer number (8221308654685).

Almost surely, 2^{16442617309369} is an apocalyptic number.

It is an amenable number.

16442617309369 is a deficient number, since it is larger than the sum of its proper divisors (1).

16442617309369 is an equidigital number, since it uses as much as digits as its factorization.

16442617309369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35271936, while the sum is 61.

The spelling of 16442617309369 in words is "sixteen trillion, four hundred forty-two billion, six hundred seventeen million, three hundred nine thousand, three hundred sixty-nine".