16004434773 has 4 divisors (see below), whose sum is σ = 21339246368. Its totient is φ = 10669623180.

The previous prime is 16004434757. The next prime is 16004434777. The reversal of 16004434773 is 37743440061.

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 not a de Polignac number, because 16004434773 - 2⁴ = 16004434757 is a prime.

It is a super-2 number, since 2×16004434773² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16004434777) 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, 2667405793 + ... + 2667405798.

It is an arithmetic number, because the mean of its divisors is an integer number (5334811592).

Almost surely, 2^16004434773 is an apocalyptic number.

It is an amenable number.

16004434773 is a deficient number, since it is larger than the sum of its proper divisors (5334811595).

16004434773 is an equidigital number, since it uses as much as digits as its factorization.

16004434773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5334811594.

The product of its (nonzero) digits is 169344, while the sum is 39.

The spelling of 16004434773 in words is "sixteen billion, four million, four hundred thirty-four thousand, seven hundred seventy-three".