16089585297449 has 2 divisors, whose sum is σ = 16089585297450. Its totient is φ = 16089585297448.

The previous prime is 16089585297407. The next prime is 16089585297469. The reversal of 16089585297449 is 94479258598061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12604523581225 + 3485061716224 = 3550285^2 + 1866832^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16089585297449 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16089585297449.

It is not a weakly prime, because it can be changed into another prime (16089585297469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8044792648724 + 8044792648725.

It is an arithmetic number, because the mean of its divisors is an integer number (8044792648725).

Almost surely, 2^{16089585297449} is an apocalyptic number.

It is an amenable number.

16089585297449 is a deficient number, since it is larger than the sum of its proper divisors (1).

16089585297449 is an equidigital number, since it uses as much as digits as its factorization.

16089585297449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1567641600, while the sum is 77.

The spelling of 16089585297449 in words is "sixteen trillion, eighty-nine billion, five hundred eighty-five million, two hundred ninety-seven thousand, four hundred forty-nine".