204411143440 has 40 divisors (see below), whose sum is σ = 543149611200. Its totient is φ = 70083820416.

The previous prime is 204411143423. The next prime is 204411143471. The reversal of 204411143440 is 44341114402.

204411143440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

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 = 204411143399 and 204411143408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182509390 + ... + 182510509.

It is an arithmetic number, because the mean of its divisors is an integer number (13578740280).

Almost surely, 2^204411143440 is an apocalyptic number.

204411143440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204411143440 is an abundant number, since it is smaller than the sum of its proper divisors (338738467760).

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

204411143440 is a wasteful number, since it uses less digits than its factorization.

204411143440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365019919 (or 365019913 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 204411143440 its reverse (44341114402), we get a palindrome (248752257842).

The spelling of 204411143440 in words is "two hundred four billion, four hundred eleven million, one hundred forty-three thousand, four hundred forty".