18044892856320 has 720 divisors, whose sum is σ = 64823775012864. Its totient is φ = 4281112985600.

The previous prime is 18044892856261. The next prime is 18044892856321. The reversal of 18044892856320 is 2365829844081.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18044892856321) 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 47 ways as a sum of consecutive naturals, for example, 1397630665 + ... + 1397643575.

Almost surely, 2^{18044892856320} is an apocalyptic number.

18044892856320 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 18044892856320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32411887506432).

18044892856320 is an abundant number, since it is smaller than the sum of its proper divisors (46778882156544).

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

18044892856320 is a wasteful number, since it uses less digits than its factorization.

18044892856320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13016 (or 12979 counting only the distinct ones).

The product of its (nonzero) digits is 26542080, while the sum is 60.

The spelling of 18044892856320 in words is "eighteen trillion, forty-four billion, eight hundred ninety-two million, eight hundred fifty-six thousand, three hundred twenty".