20344133665424 has 80 divisors (see below), whose sum is σ = 41674166206464. Its totient is φ = 9605847888000.

The previous prime is 20344133665421. The next prime is 20344133665469. The reversal of 20344133665424 is 42456633144302.

It is not an unprimeable number, because it can be changed into a prime (20344133665421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21961937 + ... + 22869519.

Almost surely, 2^{20344133665424} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20344133665424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20837083103232).

20344133665424 is an abundant number, since it is smaller than the sum of its proper divisors (21330032541040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20344133665424 is a wasteful number, since it uses less digits than its factorization.

20344133665424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908716 (or 908710 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 47.

The spelling of 20344133665424 in words is "twenty trillion, three hundred forty-four billion, one hundred thirty-three million, six hundred sixty-five thousand, four hundred twenty-four".