204421143040040 has 32 divisors (see below), whose sum is σ = 459948219626880. Its totient is φ = 81768342053952.

The previous prime is 204421143040033. The next prime is 204421143040067. The reversal of 204421143040040 is 40040341124402.

It is a junction number, because it is equal to n+sod(n) for n = 204421143039985 and 204421143040012.

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, 28746389 + ... + 35145371.

It is an arithmetic number, because the mean of its divisors is an integer number (14373381863340).

Almost surely, 2^{204421143040040} is an apocalyptic number.

204421143040040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204421143040040 is an abundant number, since it is smaller than the sum of its proper divisors (255527076586840).

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

204421143040040 is a wasteful number, since it uses less digits than its factorization.

204421143040040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7197641 (or 7197637 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 204421143040040 its reverse (40040341124402), we get a palindrome (244461484164442).

The spelling of 204421143040040 in words is "two hundred four trillion, four hundred twenty-one billion, one hundred forty-three million, forty thousand, forty".