20544203321 has 8 divisors (see below), whose sum is σ = 21628120800. Its totient is φ = 19460550240.

The previous prime is 20544203297. The next prime is 20544203357. The reversal of 20544203321 is 12330244502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20544203321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20544203021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104750 + ... + 228168.

It is an arithmetic number, because the mean of its divisors is an integer number (2703515100).

Almost surely, 2^20544203321 is an apocalyptic number.

It is an amenable number.

20544203321 is a deficient number, since it is larger than the sum of its proper divisors (1083917479).

20544203321 is a wasteful number, since it uses less digits than its factorization.

20544203321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132199.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 20544203321 its reverse (12330244502), we get a palindrome (32874447823).

The spelling of 20544203321 in words is "twenty billion, five hundred forty-four million, two hundred three thousand, three hundred twenty-one".