20433510424243 has 4 divisors (see below), whose sum is σ = 23352583342000. Its totient is φ = 17514437506488.

The previous prime is 20433510424213. The next prime is 20433510424247. The reversal of 20433510424243 is 34242401533402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20433510424243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20433510424247) 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, 1459536458868 + ... + 1459536458881.

It is an arithmetic number, because the mean of its divisors is an integer number (5838145835500).

Almost surely, 2^{20433510424243} is an apocalyptic number.

20433510424243 is a deficient number, since it is larger than the sum of its proper divisors (2919072917757).

20433510424243 is an equidigital number, since it uses as much as digits as its factorization.

20433510424243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2919072917756.

The product of its (nonzero) digits is 276480, while the sum is 37.

Adding to 20433510424243 its reverse (34242401533402), we get a palindrome (54675911957645).

The spelling of 20433510424243 in words is "twenty trillion, four hundred thirty-three billion, five hundred ten million, four hundred twenty-four thousand, two hundred forty-three".