20434403133 has 12 divisors (see below), whose sum is σ = 29643042780. Its totient is φ = 13564466496.

The previous prime is 20434403069. The next prime is 20434403219. The reversal of 20434403133 is 33130443402.

20434403133 is a `hidden beast` number, since 2 + 0 + 4 + 344 + 0 + 313 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13802255289 + 6632147844 = 117483^2 + 81438^2 .

It is not a de Polignac number, because 20434403133 - 2⁶ = 20434403069 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20434403097 and 20434403106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20434403933) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4870198 + ... + 4874391.

It is an arithmetic number, because the mean of its divisors is an integer number (2470253565).

Almost surely, 2^20434403133 is an apocalyptic number.

It is an amenable number.

20434403133 is a deficient number, since it is larger than the sum of its proper divisors (9208639647).

20434403133 is a wasteful number, since it uses less digits than its factorization.

20434403133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9744828 (or 9744825 counting only the distinct ones).

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

Adding to 20434403133 its reverse (33130443402), we get a palindrome (53564846535).

The spelling of 20434403133 in words is "twenty billion, four hundred thirty-four million, four hundred three thousand, one hundred thirty-three".