20216105504 has 96 divisors (see below), whose sum is σ = 47386684800. Its totient is φ = 8309237760.

The previous prime is 20216105501. The next prime is 20216105531. The reversal of 20216105504 is 40550161202.

It is not an unprimeable number, because it can be changed into a prime (20216105501) 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, 523202 + ... + 560510.

It is an arithmetic number, because the mean of its divisors is an integer number (493611300).

Almost surely, 2^20216105504 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 20216105504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23693342400).

20216105504 is an abundant number, since it is smaller than the sum of its proper divisors (27170579296).

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

20216105504 is a wasteful number, since it uses less digits than its factorization.

20216105504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37426 (or 37418 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 20216105504 its reverse (40550161202), we get a palindrome (60766266706).

The spelling of 20216105504 in words is "twenty billion, two hundred sixteen million, one hundred five thousand, five hundred four".