20340333013423 has 4 divisors (see below), whose sum is σ = 20345732627760. Its totient is φ = 20334933399088.

The previous prime is 20340333013417. The next prime is 20340333013439. The reversal of 20340333013423 is 32431033304302.

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 20340333013423 - 2¹³ = 20340333005231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20340333013123) 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, 2699801518 + ... + 2699809051.

It is an arithmetic number, because the mean of its divisors is an integer number (5086433156940).

Almost surely, 2^{20340333013423} is an apocalyptic number.

20340333013423 is a deficient number, since it is larger than the sum of its proper divisors (5399614337).

20340333013423 is an equidigital number, since it uses as much as digits as its factorization.

20340333013423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5399614336.

The product of its (nonzero) digits is 46656, while the sum is 31.

Adding to 20340333013423 its reverse (32431033304302), we get a palindrome (52771366317725).

The spelling of 20340333013423 in words is "twenty trillion, three hundred forty billion, three hundred thirty-three million, thirteen thousand, four hundred twenty-three".