16442565545 has 16 divisors (see below), whose sum is σ = 22782281088. Its totient is φ = 11158663680.

The previous prime is 16442565541. The next prime is 16442565547. The reversal of 16442565545 is 54556524461.

16442565545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16442565545 - 2² = 16442565541 is a prime.

It is a super-3 number, since 3×16442565545³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16442565545.

It is not an unprimeable number, because it can be changed into a prime (16442565541) 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 15 ways as a sum of consecutive naturals, for example, 2418191 + ... + 2424980.

It is an arithmetic number, because the mean of its divisors is an integer number (1423892568).

Almost surely, 2^16442565545 is an apocalyptic number.

It is an amenable number.

16442565545 is a deficient number, since it is larger than the sum of its proper divisors (6339715543).

16442565545 is an equidigital number, since it uses as much as digits as its factorization.

16442565545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4843280.

The product of its digits is 2880000, while the sum is 47.

The spelling of 16442565545 in words is "sixteen billion, four hundred forty-two million, five hundred sixty-five thousand, five hundred forty-five".