204010230440 has 16 divisors (see below), whose sum is σ = 459023018580. Its totient is φ = 81604092160.

The previous prime is 204010230401. The next prime is 204010230449. The reversal of 204010230440 is 44032010402.

It can be written as a sum of positive squares in 2 ways, for example, as 197272775716 + 6737454724 = 444154^2 + 82082^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (204010230449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2550127841 + ... + 2550127920.

Almost surely, 2^204010230440 is an apocalyptic number.

204010230440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204010230440 is an abundant number, since it is smaller than the sum of its proper divisors (255012788140).

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

204010230440 is a wasteful number, since it uses less digits than its factorization.

204010230440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5100255772 (or 5100255768 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 204010230440 its reverse (44032010402), we get a palindrome (248042240842).

The spelling of 204010230440 in words is "two hundred four billion, ten million, two hundred thirty thousand, four hundred forty".