16306809495505 has 4 divisors (see below), whose sum is σ = 19568171394612. Its totient is φ = 13045447596400.

The previous prime is 16306809495419. The next prime is 16306809495533. The reversal of 16306809495505 is 50559490860361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6688425267601 + 9618384227904 = 2586199^2 + 3101352^2 .

It is not a de Polignac number, because 16306809495505 - 2⁷ = 16306809495377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1630680949546 + ... + 1630680949555.

It is an arithmetic number, because the mean of its divisors is an integer number (4892042848653).

Almost surely, 2^{16306809495505} is an apocalyptic number.

It is an amenable number.

16306809495505 is a deficient number, since it is larger than the sum of its proper divisors (3261361899107).

16306809495505 is an equidigital number, since it uses as much as digits as its factorization.

16306809495505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3261361899106.

The product of its (nonzero) digits is 34992000, while the sum is 61.

The spelling of 16306809495505 in words is "sixteen trillion, three hundred six billion, eight hundred nine million, four hundred ninety-five thousand, five hundred five".