20404244004480 has 384 divisors, whose sum is σ = 80643647934720. Its totient is φ = 4656891101184.

The previous prime is 20404244004467. The next prime is 20404244004509. The reversal of 20404244004480 is 8440044240402.

20404244004480 is a `hidden beast` number, since 2 + 0 + 404 + 244 + 0 + 0 + 4 + 4 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26759389 + ... + 27511331.

It is an arithmetic number, because the mean of its divisors is an integer number (210009499830).

Almost surely, 2^{20404244004480} is an apocalyptic number.

20404244004480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20404244004480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40321823967360).

20404244004480 is an abundant number, since it is smaller than the sum of its proper divisors (60239403930240).

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

20404244004480 is a wasteful number, since it uses less digits than its factorization.

20404244004480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752648 (or 752633 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 36.

Adding to 20404244004480 its reverse (8440044240402), we get a palindrome (28844288244882).

The spelling of 20404244004480 in words is "twenty trillion, four hundred four billion, two hundred forty-four million, four thousand, four hundred eighty".