16645565753 has 4 divisors (see below), whose sum is σ = 16668462720. Its totient is φ = 16622668788.

The previous prime is 16645565749. The next prime is 16645565767. The reversal of 16645565753 is 35756554661.

16645565753 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 16645565753 - 2² = 16645565749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16645565695 and 16645565704.

It is not an unprimeable number, because it can be changed into a prime (16645555753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11447393 + ... + 11448846.

It is an arithmetic number, because the mean of its divisors is an integer number (4167115680).

Almost surely, 2^16645565753 is an apocalyptic number.

It is an amenable number.

16645565753 is a deficient number, since it is larger than the sum of its proper divisors (22896967).

16645565753 is an equidigital number, since it uses as much as digits as its factorization.

16645565753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22896966.

The product of its digits is 11340000, while the sum is 53.

The spelling of 16645565753 in words is "sixteen billion, six hundred forty-five million, five hundred sixty-five thousand, seven hundred fifty-three".