18840861204480 has 2688 divisors, whose sum is σ = 84986091648000. Its totient is φ = 3932899246080.

The previous prime is 18840861204449. The next prime is 18840861204493. The reversal of 18840861204480 is 8440216804881.

18840861204480 is a `hidden beast` number, since 1 + 8 + 84 + 0 + 8 + 61 + 20 + 4 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (2688).

It is a Harshad number since it is a multiple of its sum of digits (54).

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 191 ways as a sum of consecutive naturals, for example, 29858733765 + ... + 29858734395.

Almost surely, 2^{18840861204480} is an apocalyptic number.

18840861204480 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 18840861204480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42493045824000).

18840861204480 is an abundant number, since it is smaller than the sum of its proper divisors (66145230443520).

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

18840861204480 is a wasteful number, since it uses less digits than its factorization.

18840861204480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733 (or 696 counting only the distinct ones).

The product of its (nonzero) digits is 3145728, while the sum is 54.

The spelling of 18840861204480 in words is "eighteen trillion, eight hundred forty billion, eight hundred sixty-one million, two hundred four thousand, four hundred eighty".