20440461104384 has 144 divisors (see below), whose sum is σ = 43127999376000. Its totient is φ = 9641901588480.

The previous prime is 20440461104383. The next prime is 20440461104387. The reversal of 20440461104384 is 48340116404402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20440461104383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2855208197 + ... + 2855215355.

Almost surely, 2^{20440461104384} 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 20440461104384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21563999688000).

20440461104384 is an abundant number, since it is smaller than the sum of its proper divisors (22687538271616).

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

20440461104384 is a wasteful number, since it uses less digits than its factorization.

20440461104384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9564 (or 9550 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 41.

Adding to 20440461104384 its reverse (48340116404402), we get a palindrome (68780577508786).

The spelling of 20440461104384 in words is "twenty trillion, four hundred forty billion, four hundred sixty-one million, one hundred four thousand, three hundred eighty-four".