20320330432 has 56 divisors (see below), whose sum is σ = 42139063296. Its totient is φ = 9712674048.

The previous prime is 20320330379. The next prime is 20320330483. The reversal of 20320330432 is 23403302302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50793 + ... + 207895.

Almost surely, 2^20320330432 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 20320330432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21069531648).

20320330432 is an abundant number, since it is smaller than the sum of its proper divisors (21818732864).

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

20320330432 is a wasteful number, since it uses less digits than its factorization.

20320330432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157205 (or 157195 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 22.

Adding to 20320330432 its reverse (23403302302), we get a palindrome (43723632734).

The spelling of 20320330432 in words is "twenty billion, three hundred twenty million, three hundred thirty thousand, four hundred thirty-two".