20443032012 has 96 divisors (see below), whose sum is σ = 52654694400. Its totient is φ = 6134510592.

The previous prime is 20443032011. The next prime is 20443032079. The reversal of 20443032012 is 21023034402.

It is a self number, because there is not a number n which added to its sum of digits gives 20443032012.

It is not an unprimeable number, because it can be changed into a prime (20443032011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1160164 + ... + 1177652.

It is an arithmetic number, because the mean of its divisors is an integer number (548486400).

Almost surely, 2^20443032012 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 20443032012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26327347200).

20443032012 is an abundant number, since it is smaller than the sum of its proper divisors (32211662388).

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

20443032012 is a wasteful number, since it uses less digits than its factorization.

20443032012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17695 (or 17693 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20443032012 its reverse (21023034402), we get a palindrome (41466066414).

The spelling of 20443032012 in words is "twenty billion, four hundred forty-three million, thirty-two thousand, twelve".