12218452988544 has 320 divisors, whose sum is σ = 39706403964480. Its totient is φ = 3698934681600.

The previous prime is 12218452988519. The next prime is 12218452988611. The reversal of 12218452988544 is 44588925481221.

12218452988544 is a `hidden beast` number, since 1 + 2 + 2 + 1 + 8 + 4 + 5 + 2 + 9 + 88 + 544 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 117531532 + ... + 117635444.

It is an arithmetic number, because the mean of its divisors is an integer number (124082512389).

Almost surely, 2^{12218452988544} 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 12218452988544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19853201982240).

12218452988544 is an abundant number, since it is smaller than the sum of its proper divisors (27487950975936).

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

12218452988544 is a wasteful number, since it uses less digits than its factorization.

12218452988544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104981 (or 104960 counting only the distinct ones).

The product of its digits is 58982400, while the sum is 63.

The spelling of 12218452988544 in words is "twelve trillion, two hundred eighteen billion, four hundred fifty-two million, nine hundred eighty-eight thousand, five hundred forty-four".