18308833004240 has 160 divisors (see below), whose sum is σ = 45191967171840. Its totient is φ = 6874417078272.

The previous prime is 18308833004233. The next prime is 18308833004251. The reversal of 18308833004240 is 4240033880381.

It is a junction number, because it is equal to n+sod(n) for n = 18308833004191 and 18308833004200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1029213266 + ... + 1029231054.

It is an arithmetic number, because the mean of its divisors is an integer number (282449794824).

Almost surely, 2^{18308833004240} is an apocalyptic number.

18308833004240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18308833004240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22595983585920).

18308833004240 is an abundant number, since it is smaller than the sum of its proper divisors (26883134167600).

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

18308833004240 is a wasteful number, since it uses less digits than its factorization.

18308833004240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19789 (or 19783 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 44.

The spelling of 18308833004240 in words is "eighteen trillion, three hundred eight billion, eight hundred thirty-three million, four thousand, two hundred forty".