18183044439120 has 320 divisors, whose sum is σ = 65120609228544. Its totient is φ = 4147970703360.

The previous prime is 18183044439101. The next prime is 18183044439149. The reversal of 18183044439120 is 2193444038181.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 18183044439120.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 272522884 + ... + 272589596.

Almost surely, 2^{18183044439120} is an apocalyptic number.

18183044439120 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 18183044439120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32560304614272).

18183044439120 is an abundant number, since it is smaller than the sum of its proper divisors (46937564789424).

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

18183044439120 is a wasteful number, since it uses less digits than its factorization.

18183044439120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72830 (or 72824 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 48.

The spelling of 18183044439120 in words is "eighteen trillion, one hundred eighty-three billion, forty-four million, four hundred thirty-nine thousand, one hundred twenty".