8843218538742 has 128 divisors (see below), whose sum is σ = 23504993740800. Its totient is φ = 2409607968768.

The previous prime is 8843218538731. The next prime is 8843218538747. The reversal of 8843218538742 is 2478358123488.

8843218538742 is a `hidden beast` number, since 8 + 8 + 4 + 3 + 21 + 8 + 538 + 74 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 8843218538742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8843218538747) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1420734 + ... + 4439022.

It is an arithmetic number, because the mean of its divisors is an integer number (183632763600).

Almost surely, 2^{8843218538742} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8843218538742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11752496870400).

8843218538742 is an abundant number, since it is smaller than the sum of its proper divisors (14661775202058).

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

8843218538742 is a wasteful number, since it uses less digits than its factorization.

8843218538742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3018667 (or 3018661 counting only the distinct ones).

The product of its digits is 82575360, while the sum is 63.

The spelling of 8843218538742 in words is "eight trillion, eight hundred forty-three billion, two hundred eighteen million, five hundred thirty-eight thousand, seven hundred forty-two".