20430340433233 has 4 divisors (see below), whose sum is σ = 20440540305648. Its totient is φ = 20420140560820.

The previous prime is 20430340433141. The next prime is 20430340433287. The reversal of 20430340433233 is 33233404303402.

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 20430340433233 - 2⁹ = 20430340432721 is a prime.

It is a super-2 number, since 2×20430340433233² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20430340733233) 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, 5099933203 + ... + 5099937208.

It is an arithmetic number, because the mean of its divisors is an integer number (5110135076412).

Almost surely, 2^{20430340433233} is an apocalyptic number.

It is an amenable number.

20430340433233 is a deficient number, since it is larger than the sum of its proper divisors (10199872415).

20430340433233 is a wasteful number, since it uses less digits than its factorization.

20430340433233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10199872414.

The product of its (nonzero) digits is 186624, while the sum is 34.

Adding to 20430340433233 its reverse (33233404303402), we get a palindrome (53663744736635).

The spelling of 20430340433233 in words is "twenty trillion, four hundred thirty billion, three hundred forty million, four hundred thirty-three thousand, two hundred thirty-three".