204330540720640 has 40 divisors (see below), whose sum is σ = 489914398030860. Its totient is φ = 81732216287232.

The previous prime is 204330540720557. The next prime is 204330540720653. The reversal of 204330540720640 is 46027045033402.

It can be written as a sum of positive squares in 2 ways, for example, as 197104078469376 + 7226462251264 = 14039376^2 + 2688208^2 .

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 (40).

It is a junction number, because it is equal to n+sod(n) for n = 204330540720593 and 204330540720602.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39908306175 + ... + 39908311294.

Almost surely, 2^{204330540720640} is an apocalyptic number.

204330540720640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204330540720640 is an abundant number, since it is smaller than the sum of its proper divisors (285583857310220).

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

204330540720640 is an frugal number, since it uses more digits than its factorization.

204330540720640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79816617492 (or 79816617476 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 40.

The spelling of 204330540720640 in words is "two hundred four trillion, three hundred thirty billion, five hundred forty million, seven hundred twenty thousand, six hundred forty".