16304018144885 has 4 divisors (see below), whose sum is σ = 19564821773868. Its totient is φ = 13043214515904.

The previous prime is 16304018144881. The next prime is 16304018144891. The reversal of 16304018144885 is 58844181040361.

It is a happy number.

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 6889958266129 + 9414059878756 = 2624873^2 + 3068234^2 .

It is a cyclic number.

It is not a de Polignac number, because 16304018144885 - 2² = 16304018144881 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16304018144881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1630401814484 + ... + 1630401814493.

It is an arithmetic number, because the mean of its divisors is an integer number (4891205443467).

Almost surely, 2^{16304018144885} is an apocalyptic number.

It is an amenable number.

16304018144885 is a deficient number, since it is larger than the sum of its proper divisors (3260803628983).

16304018144885 is an equidigital number, since it uses as much as digits as its factorization.

16304018144885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3260803628982.

The product of its (nonzero) digits is 2949120, while the sum is 53.

The spelling of 16304018144885 in words is "sixteen trillion, three hundred four billion, eighteen million, one hundred forty-four thousand, eight hundred eighty-five".