20200040443 has 24 divisors (see below), whose sum is σ = 22906830464. Its totient is φ = 17786355840.

The previous prime is 20200040429. The next prime is 20200040473. The reversal of 20200040443 is 34404000202.

It is a de Polignac number, because none of the positive numbers 2^k-20200040443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20200040443.

It is not an unprimeable number, because it can be changed into a prime (20200040473) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 988255 + ... + 1008487.

Almost surely, 2^20200040443 is an apocalyptic number.

20200040443 is a deficient number, since it is larger than the sum of its proper divisors (2706790021).

20200040443 is a wasteful number, since it uses less digits than its factorization.

20200040443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20515 (or 20504 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

Adding to 20200040443 its reverse (34404000202), we get a palindrome (54604040645).

The spelling of 20200040443 in words is "twenty billion, two hundred million, forty thousand, four hundred forty-three".