18054441216 has 324 divisors, whose sum is σ = 62807598672. Its totient is φ = 5157540864.

The previous prime is 18054441203. The next prime is 18054441217. The reversal of 18054441216 is 61214445081.

18054441216 is a `hidden beast` number, since 180 + 54 + 4 + 412 + 16 = 666.

It is a tau number, because it is divible by the number of its divisors (324).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (18054441217) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3045231 + ... + 3051153.

Almost surely, 2^18054441216 is an apocalyptic number.

18054441216 is a gapful number since it is divisible by the number (16) 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 18054441216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31403799336).

18054441216 is an abundant number, since it is smaller than the sum of its proper divisors (44753157456).

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

18054441216 is an frugal number, since it uses more digits than its factorization.

18054441216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5968 (or 5935 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

Adding to 18054441216 its reverse (61214445081), we get a palindrome (79268886297).

The spelling of 18054441216 in words is "eighteen billion, fifty-four million, four hundred forty-one thousand, two hundred sixteen".