20344340343 has 8 divisors (see below), whose sum is σ = 27787391856. Its totient is φ = 13232091200.

The previous prime is 20344340327. The next prime is 20344340363. The reversal of 20344340343 is 34304344302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20344340343 - 2⁴ = 20344340327 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20344340343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344340323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82700448 + ... + 82700693.

It is an arithmetic number, because the mean of its divisors is an integer number (3473423982).

Almost surely, 2^20344340343 is an apocalyptic number.

20344340343 is a deficient number, since it is larger than the sum of its proper divisors (7443051513).

20344340343 is a wasteful number, since it uses less digits than its factorization.

20344340343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165401185.

The product of its (nonzero) digits is 41472, while the sum is 30.

Adding to 20344340343 its reverse (34304344302), we get a palindrome (54648684645).

The spelling of 20344340343 in words is "twenty billion, three hundred forty-four million, three hundred forty thousand, three hundred forty-three".