20320000443 has 12 divisors (see below), whose sum is σ = 30438190328. Its totient is φ = 13546666800.

The previous prime is 20320000411. The next prime is 20320000487. The reversal of 20320000443 is 34400002302.

20320000443 is a `hidden beast` number, since 20 + 3 + 200 + 0 + 0 + 443 = 666.

It is not a de Polignac number, because 20320000443 - 2⁵ = 20320000411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20320000643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41810458 + ... + 41810943.

Almost surely, 2^20320000443 is an apocalyptic number.

20320000443 is a deficient number, since it is larger than the sum of its proper divisors (10118189885).

20320000443 is an frugal number, since it uses more digits than its factorization.

20320000443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83621416 (or 83621404 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

Adding to 20320000443 its reverse (34400002302), we get a palindrome (54720002745).

The spelling of 20320000443 in words is "twenty billion, three hundred twenty million, four hundred forty-three", and thus it is an aban number.