204230512440 has 192 divisors, whose sum is σ = 672949555200. Its totient is φ = 53708219136.

The previous prime is 204230512439. The next prime is 204230512459. The reversal of 204230512440 is 44215032402.

204230512440 is a `hidden beast` number, since 204 + 2 + 3 + 0 + 5 + 12 + 440 = 666.

It is a congruent number.

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, 26928889 + ... + 26936471.

It is an arithmetic number, because the mean of its divisors is an integer number (3504945600).

Almost surely, 2^204230512440 is an apocalyptic number.

204230512440 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 204230512440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336474777600).

204230512440 is an abundant number, since it is smaller than the sum of its proper divisors (468719042760).

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

204230512440 is a wasteful number, since it uses less digits than its factorization.

204230512440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8626 (or 8619 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 204230512440 its reverse (44215032402), we get a palindrome (248445544842).

The spelling of 204230512440 in words is "two hundred four billion, two hundred thirty million, five hundred twelve thousand, four hundred forty".