20143241224320 has 128 divisors (see below), whose sum is σ = 64217191040640. Its totient is φ = 5370643390464.

The previous prime is 20143241224283. The next prime is 20143241224321. The reversal of 20143241224320 is 2342214234102.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×20143241224320² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (20143241224321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10796397 + ... + 12523923.

It is an arithmetic number, because the mean of its divisors is an integer number (501696805005).

Almost surely, 2^{20143241224320} is an apocalyptic number.

20143241224320 is a gapful number since it is divisible by the number (20) 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 20143241224320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32108595520320).

20143241224320 is an abundant number, since it is smaller than the sum of its proper divisors (44073949816320).

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

20143241224320 is a wasteful number, since it uses less digits than its factorization.

20143241224320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733622 (or 1733610 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 20143241224320 its reverse (2342214234102), we get a palindrome (22485455458422).

The spelling of 20143241224320 in words is "twenty trillion, one hundred forty-three billion, two hundred forty-one million, two hundred twenty-four thousand, three hundred twenty".