16085284109 has 2 divisors, whose sum is σ = 16085284110. Its totient is φ = 16085284108.

The previous prime is 16085284099. The next prime is 16085284147. The reversal of 16085284109 is 90148258061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15387162025 + 698122084 = 124045^2 + 26422^2 .

It is an emirp because it is prime and its reverse (90148258061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16085284109 - 2¹⁶ = 16085218573 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16085284109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16085214109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8042642054 + 8042642055.

It is an arithmetic number, because the mean of its divisors is an integer number (8042642055).

Almost surely, 2^16085284109 is an apocalyptic number.

It is an amenable number.

16085284109 is a deficient number, since it is larger than the sum of its proper divisors (1).

16085284109 is an equidigital number, since it uses as much as digits as its factorization.

16085284109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 44.

The spelling of 16085284109 in words is "sixteen billion, eighty-five million, two hundred eighty-four thousand, one hundred nine".