21744753010520 has 16 divisors (see below), whose sum is σ = 48925694273760. Its totient is φ = 8697901204192.

The previous prime is 21744753010457. The next prime is 21744753010529. The reversal of 21744753010520 is 2501035744712.

It is a super-4 number, since 4×21744753010520⁴ (a number of 54 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21744753010529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271809412592 + ... + 271809412671.

It is an arithmetic number, because the mean of its divisors is an integer number (3057855892110).

Almost surely, 2^{21744753010520} is an apocalyptic number.

21744753010520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21744753010520 is an abundant number, since it is smaller than the sum of its proper divisors (27180941263240).

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

21744753010520 is a wasteful number, since it uses less digits than its factorization.

21744753010520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543618825274 (or 543618825270 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 41.

The spelling of 21744753010520 in words is "twenty-one trillion, seven hundred forty-four billion, seven hundred fifty-three million, ten thousand, five hundred twenty".