20443043430 has 24 divisors (see below), whose sum is σ = 53151913152. Its totient is φ = 5451478224.

The previous prime is 20443043353. The next prime is 20443043447. The reversal of 20443043430 is 3434034402.

It is a junction number, because it is equal to n+sod(n) for n = 20443043394 and 20443043403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113572374 + ... + 113572553.

It is an arithmetic number, because the mean of its divisors is an integer number (2214663048).

Almost surely, 2^20443043430 is an apocalyptic number.

20443043430 is an abundant number, since it is smaller than the sum of its proper divisors (32708869722).

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

20443043430 is a wasteful number, since it uses less digits than its factorization.

20443043430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227144940 (or 227144937 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

Adding to 20443043430 its reverse (3434034402), we get a palindrome (23877077832).

The spelling of 20443043430 in words is "twenty billion, four hundred forty-three million, forty-three thousand, four hundred thirty".