20004303216 has 160 divisors (see below), whose sum is σ = 55130400000. Its totient is φ = 6232633344.

The previous prime is 20004303161. The next prime is 20004303239. The reversal of 20004303216 is 61230340002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20004303192 and 20004303201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40088535 + ... + 40089033.

It is an arithmetic number, because the mean of its divisors is an integer number (344565000).

Almost surely, 2^20004303216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20004303216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27565200000).

20004303216 is an abundant number, since it is smaller than the sum of its proper divisors (35126096784).

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

20004303216 is a wasteful number, since it uses less digits than its factorization.

20004303216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031 (or 1025 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20004303216 its reverse (61230340002), we get a palindrome (81234643218).

The spelling of 20004303216 in words is "twenty billion, four million, three hundred three thousand, two hundred sixteen".