18065796864 has 36 divisors (see below), whose sum is σ = 48081367656. Its totient is φ = 6021932032.

The previous prime is 18065796851. The next prime is 18065796883. The reversal of 18065796864 is 46869756081.

It is a junction number, because it is equal to n+sod(n) for n = 18065796798 and 18065796807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11760819 + ... + 11762354.

It is an arithmetic number, because the mean of its divisors is an integer number (1335593546).

Almost surely, 2^18065796864 is an apocalyptic number.

It is an amenable number.

18065796864 is an abundant number, since it is smaller than the sum of its proper divisors (30015570792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18065796864 is an equidigital number, since it uses as much as digits as its factorization.

18065796864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23523192 (or 23523178 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 60.

The spelling of 18065796864 in words is "eighteen billion, sixty-five million, seven hundred ninety-six thousand, eight hundred sixty-four".