18480729173089 has 16 divisors (see below), whose sum is σ = 18546429229888. Its totient is φ = 18415161317952.

The previous prime is 18480729173017. The next prime is 18480729173129. The reversal of 18480729173089 is 98037192708481.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18480729173089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18480709173089) 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 15 ways as a sum of consecutive naturals, for example, 1784365699 + ... + 1784376055.

It is an arithmetic number, because the mean of its divisors is an integer number (1159151826868).

Almost surely, 2^{18480729173089} is an apocalyptic number.

It is an amenable number.

18480729173089 is a deficient number, since it is larger than the sum of its proper divisors (65700056799).

18480729173089 is a wasteful number, since it uses less digits than its factorization.

18480729173089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16144.

The product of its (nonzero) digits is 48771072, while the sum is 67.

The spelling of 18480729173089 in words is "eighteen trillion, four hundred eighty billion, seven hundred twenty-nine million, one hundred seventy-three thousand, eighty-nine".