20020504403 has 4 divisors (see below), whose sum is σ = 20021351640. Its totient is φ = 20019657168.

The previous prime is 20020504391. The next prime is 20020504411. The reversal of 20020504403 is 30440502002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20020504403 - 2³⁰ = 18946762579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20020504463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387125 + ... + 435782.

It is an arithmetic number, because the mean of its divisors is an integer number (5005337910).

Almost surely, 2^20020504403 is an apocalyptic number.

20020504403 is a deficient number, since it is larger than the sum of its proper divisors (847237).

20020504403 is an equidigital number, since it uses as much as digits as its factorization.

20020504403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847236.

The product of its (nonzero) digits is 960, while the sum is 20.

The spelling of 20020504403 in words is "twenty billion, twenty million, five hundred four thousand, four hundred three".