16065500509 has 2 divisors, whose sum is σ = 16065500510. Its totient is φ = 16065500508.

The previous prime is 16065500491. The next prime is 16065500527. The reversal of 16065500509 is 90500556061.

It is a balanced prime because it is at equal distance from previous prime (16065500491) and next prime (16065500527).

It can be written as a sum of positive squares in only one way, i.e., 16007816484 + 57684025 = 126522^2 + 7595^2 .

It is a cyclic number.

It is not a de Polignac number, because 16065500509 - 2¹⁵ = 16065467741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16065560509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8032750254 + 8032750255.

It is an arithmetic number, because the mean of its divisors is an integer number (8032750255).

Almost surely, 2^16065500509 is an apocalyptic number.

It is an amenable number.

16065500509 is a deficient number, since it is larger than the sum of its proper divisors (1).

16065500509 is an equidigital number, since it uses as much as digits as its factorization.

16065500509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40500, while the sum is 37.

The spelling of 16065500509 in words is "sixteen billion, sixty-five million, five hundred thousand, five hundred nine".