20641433303 has 4 divisors (see below), whose sum is σ = 21855635280. Its totient is φ = 19427231328.

The previous prime is 20641433291. The next prime is 20641433363. The reversal of 20641433303 is 30333414602.

It is a happy number.

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 20641433303 - 2²⁰ = 20640384727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20641433363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 607100963 + ... + 607100996.

It is an arithmetic number, because the mean of its divisors is an integer number (5463908820).

Almost surely, 2^20641433303 is an apocalyptic number.

20641433303 is a deficient number, since it is larger than the sum of its proper divisors (1214201977).

20641433303 is a wasteful number, since it uses less digits than its factorization.

20641433303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214201976.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 20641433303 its reverse (30333414602), we get a palindrome (50974847905).

The spelling of 20641433303 in words is "twenty billion, six hundred forty-one million, four hundred thirty-three thousand, three hundred three".