16344432205 has 4 divisors (see below), whose sum is σ = 19613318652. Its totient is φ = 13075545760.

The previous prime is 16344432193. The next prime is 16344432257. The reversal of 16344432205 is 50223444361.

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 2244769641 + 14099662564 = 47379^2 + 118742^2 .

It is not a de Polignac number, because 16344432205 - 2⁵ = 16344432173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1634443216 + ... + 1634443225.

It is an arithmetic number, because the mean of its divisors is an integer number (4903329663).

Almost surely, 2^16344432205 is an apocalyptic number.

It is an amenable number.

16344432205 is a deficient number, since it is larger than the sum of its proper divisors (3268886447).

16344432205 is an equidigital number, since it uses as much as digits as its factorization.

16344432205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3268886446.

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 16344432205 its reverse (50223444361), we get a palindrome (66567876566).

The spelling of 16344432205 in words is "sixteen billion, three hundred forty-four million, four hundred thirty-two thousand, two hundred five".