16004035205 has 4 divisors (see below), whose sum is σ = 19204842252. Its totient is φ = 12803228160.

The previous prime is 16004035193. The next prime is 16004035273. The reversal of 16004035205 is 50253040061.

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 10999604641 + 5004430564 = 104879^2 + 70742^2 .

It is not a de Polignac number, because 16004035205 - 2¹⁰ = 16004034181 is a prime.

It is a super-2 number, since 2×16004035205² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent 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, 1600403516 + ... + 1600403525.

It is an arithmetic number, because the mean of its divisors is an integer number (4801210563).

Almost surely, 2^16004035205 is an apocalyptic number.

It is an amenable number.

16004035205 is a deficient number, since it is larger than the sum of its proper divisors (3200807047).

16004035205 is an equidigital number, since it uses as much as digits as its factorization.

16004035205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3200807046.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 16004035205 its reverse (50253040061), we get a palindrome (66257075266).

The spelling of 16004035205 in words is "sixteen billion, four million, thirty-five thousand, two hundred five".