20324043401243 has 4 divisors (see below), whose sum is σ = 21519575366040. Its totient is φ = 19128511436448.

The previous prime is 20324043401239. The next prime is 20324043401269. The reversal of 20324043401243 is 34210434042302.

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 20324043401243 - 2² = 20324043401239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20324043401843) 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, 597765982373 + ... + 597765982406.

It is an arithmetic number, because the mean of its divisors is an integer number (5379893841510).

Almost surely, 2^{20324043401243} is an apocalyptic number.

20324043401243 is a deficient number, since it is larger than the sum of its proper divisors (1195531964797).

20324043401243 is a wasteful number, since it uses less digits than its factorization.

20324043401243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195531964796.

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 20324043401243 its reverse (34210434042302), we get a palindrome (54534477443545).

The spelling of 20324043401243 in words is "twenty trillion, three hundred twenty-four billion, forty-three million, four hundred one thousand, two hundred forty-three".