21744113554116 has 72 divisors (see below), whose sum is σ = 57863824855200. Its totient is φ = 6865769312640.

The previous prime is 21744113554067. The next prime is 21744113554133. The reversal of 21744113554116 is 61145531144712.

21744113554116 is a `hidden beast` number, since 2 + 1 + 74 + 4 + 1 + 1 + 35 + 541 + 1 + 6 = 666.

It is a super-2 number, since 2×21744113554116² (a number of 27 digits) contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 4106815 + ... + 7768793.

It is an arithmetic number, because the mean of its divisors is an integer number (803664234100).

Almost surely, 2^{21744113554116} is an apocalyptic number.

It is an amenable number.

21744113554116 is an abundant number, since it is smaller than the sum of its proper divisors (36119711301084).

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

21744113554116 is a wasteful number, since it uses less digits than its factorization.

21744113554116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3670689 (or 3670684 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

Adding to 21744113554116 its reverse (61145531144712), we get a palindrome (82889644698828).

The spelling of 21744113554116 in words is "twenty-one trillion, seven hundred forty-four billion, one hundred thirteen million, five hundred fifty-four thousand, one hundred sixteen".