20005443132 has 12 divisors (see below), whose sum is σ = 46679367336. Its totient is φ = 6668481040.

The previous prime is 20005443091. The next prime is 20005443167. The reversal of 20005443132 is 23134450002.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 833560119 + ... + 833560142.

It is an arithmetic number, because the mean of its divisors is an integer number (3889947278).

Almost surely, 2^20005443132 is an apocalyptic number.

It is an amenable number.

20005443132 is an abundant number, since it is smaller than the sum of its proper divisors (26673924204).

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

20005443132 is a wasteful number, since it uses less digits than its factorization.

20005443132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667120268 (or 1667120266 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 20005443132 its reverse (23134450002), we get a palindrome (43139893134).

The spelling of 20005443132 in words is "twenty billion, five million, four hundred forty-three thousand, one hundred thirty-two".