20321330043344 has 40 divisors (see below), whose sum is σ = 44433002221920. Its totient is φ = 8918452054400.

The previous prime is 20321330043337. The next prime is 20321330043407. The reversal of 20321330043344 is 44334003312302.

It is a super-3 number, since 3×20321330043344³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20321330043344.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1990720802 + ... + 1990731009.

It is an arithmetic number, because the mean of its divisors is an integer number (1110825055548).

Almost surely, 2^{20321330043344} is an apocalyptic number.

It is an amenable number.

20321330043344 is an abundant number, since it is smaller than the sum of its proper divisors (24111672178576).

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

20321330043344 is a wasteful number, since it uses less digits than its factorization.

20321330043344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3981451859 (or 3981451853 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 32.

Adding to 20321330043344 its reverse (44334003312302), we get a palindrome (64655333355646).

The spelling of 20321330043344 in words is "twenty trillion, three hundred twenty-one billion, three hundred thirty million, forty-three thousand, three hundred forty-four".