20443000020 has 24 divisors (see below), whose sum is σ = 57240400224. Its totient is φ = 5451466656.

The previous prime is 20443000013. The next prime is 20443000043. The reversal of 20443000020 is 2000034402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170358274 + ... + 170358393.

It is an arithmetic number, because the mean of its divisors is an integer number (2385016676).

Almost surely, 2^20443000020 is an apocalyptic number.

20443000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20443000020 is an abundant number, since it is smaller than the sum of its proper divisors (36797400204).

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

20443000020 is a wasteful number, since it uses less digits than its factorization.

20443000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340716679 (or 340716677 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

Adding to 20443000020 its reverse (2000034402), we get a palindrome (22443034422).

The spelling of 20443000020 in words is "twenty billion, four hundred forty-three million, twenty", and thus it is an aban number.