18065404485717 has 64 divisors (see below), whose sum is σ = 26016479838720. Its totient is φ = 11108837376000.

The previous prime is 18065404485631. The next prime is 18065404485719. The reversal of 18065404485717 is 71758440456081.

It is a happy number.

It is not a de Polignac number, because 18065404485717 - 2⁷ = 18065404485589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18065404485719) 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 63 ways as a sum of consecutive naturals, for example, 1453014333 + ... + 1453026765.

It is an arithmetic number, because the mean of its divisors is an integer number (406507497480).

Almost surely, 2^{18065404485717} is an apocalyptic number.

18065404485717 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

18065404485717 is a deficient number, since it is larger than the sum of its proper divisors (7951075353003).

18065404485717 is a wasteful number, since it uses less digits than its factorization.

18065404485717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14174.

The product of its (nonzero) digits is 30105600, while the sum is 60.

The spelling of 18065404485717 in words is "eighteen trillion, sixty-five billion, four hundred four million, four hundred eighty-five thousand, seven hundred seventeen".