20303042433 has 4 divisors (see below), whose sum is σ = 27070723248. Its totient is φ = 13535361620.

The previous prime is 20303042311. The next prime is 20303042447. The reversal of 20303042433 is 33424030302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20303042433 - 2⁹ = 20303041921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20303042233) 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, 3383840403 + ... + 3383840408.

It is an arithmetic number, because the mean of its divisors is an integer number (6767680812).

Almost surely, 2^20303042433 is an apocalyptic number.

It is an amenable number.

20303042433 is a deficient number, since it is larger than the sum of its proper divisors (6767680815).

20303042433 is an equidigital number, since it uses as much as digits as its factorization.

20303042433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6767680814.

The product of its (nonzero) digits is 5184, while the sum is 24.

Adding to 20303042433 its reverse (33424030302), we get a palindrome (53727072735).

The spelling of 20303042433 in words is "twenty billion, three hundred three million, forty-two thousand, four hundred thirty-three".