20320253530444 has 24 divisors (see below), whose sum is σ = 41013355755680. Its totient is φ = 8628783935616.

The previous prime is 20320253530441. The next prime is 20320253530453. The reversal of 20320253530444 is 44403535202302.

It is not an unprimeable number, because it can be changed into a prime (20320253530441) 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, 3329003097 + ... + 3329009200.

Almost surely, 2^{20320253530444} is an apocalyptic number.

It is an amenable number.

20320253530444 is an abundant number, since it is smaller than the sum of its proper divisors (20693102225236).

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

20320253530444 is a wasteful number, since it uses less digits than its factorization.

20320253530444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6658012417 (or 6658012415 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 37.

Adding to 20320253530444 its reverse (44403535202302), we get a palindrome (64723788732746).

The spelling of 20320253530444 in words is "twenty trillion, three hundred twenty billion, two hundred fifty-three million, five hundred thirty thousand, four hundred forty-four".