16790436209 has 4 divisors (see below), whose sum is σ = 16792987200. Its totient is φ = 16787885220.

The previous prime is 16790436167. The next prime is 16790436227. The reversal of 16790436209 is 90263409761.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16790436209 - 2⁸ = 16790435953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16790436109) 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 in 3 ways as a sum of consecutive naturals, for example, 1265597 + ... + 1278794.

It is an arithmetic number, because the mean of its divisors is an integer number (4198246800).

Almost surely, 2^16790436209 is an apocalyptic number.

It is an amenable number.

16790436209 is a deficient number, since it is larger than the sum of its proper divisors (2550991).

16790436209 is an equidigital number, since it uses as much as digits as its factorization.

16790436209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2550990.

The product of its (nonzero) digits is 489888, while the sum is 47.

The spelling of 16790436209 in words is "sixteen billion, seven hundred ninety million, four hundred thirty-six thousand, two hundred nine".