20403333243244 has 96 divisors (see below), whose sum is σ = 43621359788160. Its totient is φ = 8151063478272.

The previous prime is 20403333243199. The next prime is 20403333243283. The reversal of 20403333243244 is 44234233330402.

20403333243244 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128229624 + ... + 128388640.

It is an arithmetic number, because the mean of its divisors is an integer number (454389164460).

Almost surely, 2^{20403333243244} 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 20403333243244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21810679894080).

20403333243244 is an abundant number, since it is smaller than the sum of its proper divisors (23218026544916).

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

20403333243244 is a wasteful number, since it uses less digits than its factorization.

20403333243244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161627 (or 161625 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 37.

Adding to 20403333243244 its reverse (44234233330402), we get a palindrome (64637566573646).

The spelling of 20403333243244 in words is "twenty trillion, four hundred three billion, three hundred thirty-three million, two hundred forty-three thousand, two hundred forty-four".