18198768796768 has 192 divisors, whose sum is σ = 44044378560000. Its totient is φ = 7378492165632.

The previous prime is 18198768796751. The next prime is 18198768796783. The reversal of 18198768796768 is 86769786789181.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 147796155 + ... + 147919237.

It is an arithmetic number, because the mean of its divisors is an integer number (229397805000).

Almost surely, 2^{18198768796768} 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 18198768796768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22022189280000).

18198768796768 is an abundant number, since it is smaller than the sum of its proper divisors (25845609763232).

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

18198768796768 is a wasteful number, since it uses less digits than its factorization.

18198768796768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123842 (or 123820 counting only the distinct ones).

The product of its digits is 24580620288, while the sum is 91.

The spelling of 18198768796768 in words is "eighteen trillion, one hundred ninety-eight billion, seven hundred sixty-eight million, seven hundred ninety-six thousand, seven hundred sixty-eight".