204421344440 has 32 divisors (see below), whose sum is σ = 460418888880. Its totient is φ = 81684828672.

The previous prime is 204421344419. The next prime is 204421344497. The reversal of 204421344440 is 44443124402.

It is a junction number, because it is equal to n+sod(n) for n = 204421344397 and 204421344406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2576342 + ... + 2654501.

Almost surely, 2^204421344440 is an apocalyptic number.

204421344440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204421344440 is an abundant number, since it is smaller than the sum of its proper divisors (255997544440).

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

204421344440 is a wasteful number, since it uses less digits than its factorization.

204421344440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5231831 (or 5231827 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 32.

Adding to 204421344440 its reverse (44443124402), we get a palindrome (248864468842).

The spelling of 204421344440 in words is "two hundred four billion, four hundred twenty-one million, three hundred forty-four thousand, four hundred forty".