20430443133 has 20 divisors (see below), whose sum is σ = 30524524800. Its totient is φ = 13618075752.

The previous prime is 20430443087. The next prime is 20430443153. The reversal of 20430443133 is 33134403402.

20430443133 is a `hidden beast` number, since 204 + 3 + 0 + 443 + 13 + 3 = 666.

It is not a de Polignac number, because 20430443133 - 2²⁶ = 20363334269 is a prime.

It is a super-2 number, since 2×20430443133² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20430443097 and 20430443106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20430443153) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 591268 + ... + 624866.

It is an arithmetic number, because the mean of its divisors is an integer number (1526226240).

Almost surely, 2^20430443133 is an apocalyptic number.

It is an amenable number.

20430443133 is a deficient number, since it is larger than the sum of its proper divisors (10094081667).

20430443133 is an equidigital number, since it uses as much as digits as its factorization.

20430443133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41118 (or 41109 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 20430443133 its reverse (33134403402), we get a palindrome (53564846535).

The spelling of 20430443133 in words is "twenty billion, four hundred thirty million, four hundred forty-three thousand, one hundred thirty-three".