20316406336 has 56 divisors (see below), whose sum is σ = 42874976480. Its totient is φ = 9524293632.

The previous prime is 20316406321. The next prime is 20316406339. The reversal of 20316406336 is 63360461302.

It is not an unprimeable number, because it can be changed into a prime (20316406339) 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, 31831 + ... + 204073.

It is an arithmetic number, because the mean of its divisors is an integer number (765624580).

Almost surely, 2^20316406336 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 20316406336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21437488240).

20316406336 is an abundant number, since it is smaller than the sum of its proper divisors (22558570144).

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

20316406336 is a wasteful number, since it uses less digits than its factorization.

20316406336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172371 (or 172361 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 34.

Adding to 20316406336 its reverse (63360461302), we get a palindrome (83676867638).

The spelling of 20316406336 in words is "twenty billion, three hundred sixteen million, four hundred six thousand, three hundred thirty-six".