20320212444 has 48 divisors (see below), whose sum is σ = 55935215616. Its totient is φ = 5618491200.

The previous prime is 20320212433. The next prime is 20320212461. The reversal of 20320212444 is 44421202302.

It is a super-2 number, since 2×20320212444² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3899127 + ... + 3904334.

It is an arithmetic number, because the mean of its divisors is an integer number (1165316992).

Almost surely, 2^20320212444 is an apocalyptic number.

It is an amenable number.

20320212444 is an abundant number, since it is smaller than the sum of its proper divisors (35615003172).

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

20320212444 is a wasteful number, since it uses less digits than its factorization.

20320212444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7803506 (or 7803504 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20320212444 its reverse (44421202302), we get a palindrome (64741414746).

The spelling of 20320212444 in words is "twenty billion, three hundred twenty million, two hundred twelve thousand, four hundred forty-four".