204044042440 has 32 divisors (see below), whose sum is σ = 524684681280. Its totient is φ = 69957957312.

The previous prime is 204044042417. The next prime is 204044042539. The reversal of 204044042440 is 44240440402.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 204044042399 and 204044042408.

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, 364364082 + ... + 364364641.

It is an arithmetic number, because the mean of its divisors is an integer number (16396396290).

Almost surely, 2^204044042440 is an apocalyptic number.

204044042440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204044042440 is an abundant number, since it is smaller than the sum of its proper divisors (320640638840).

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

204044042440 is a wasteful number, since it uses less digits than its factorization.

204044042440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728728741 (or 728728737 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 204044042440 its reverse (44240440402), we get a palindrome (248284482842).

The spelling of 204044042440 in words is "two hundred four billion, forty-four million, forty-two thousand, four hundred forty".