18035505684944 has 80 divisors (see below), whose sum is σ = 39440667510720. Its totient is φ = 7914131527680.

The previous prime is 18035505684893. The next prime is 18035505684967. The reversal of 18035505684944 is 44948650553081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35768567 + ... + 36269289.

It is an arithmetic number, because the mean of its divisors is an integer number (493008343884).

Almost surely, 2^{18035505684944} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18035505684944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19720333755360).

18035505684944 is an abundant number, since it is smaller than the sum of its proper divisors (21405161825776).

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

18035505684944 is a wasteful number, since it uses less digits than its factorization.

18035505684944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507828 (or 507822 counting only the distinct ones).

The product of its (nonzero) digits is 82944000, while the sum is 62.

The spelling of 18035505684944 in words is "eighteen trillion, thirty-five billion, five hundred five million, six hundred eighty-four thousand, nine hundred forty-four".