204552655066656 has 240 divisors, whose sum is σ = 685968719053464. Its totient is φ = 59236967817216.

The previous prime is 204552655066651. The next prime is 204552655066657. The reversal of 204552655066656 is 656660556255402.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 129756794695056 + 74795860371600 = 11391084^2 + 8648460^2 .

It is a junction number, because it is equal to n+sod(n) for n = 204552655066593 and 204552655066602.

It is not an unprimeable number, because it can be changed into a prime (204552655066651) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 177972235 + ... + 179117898.

Almost surely, 2^{204552655066656} is an apocalyptic number.

204552655066656 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

204552655066656 is an abundant number, since it is smaller than the sum of its proper divisors (481416063986808).

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

204552655066656 is a wasteful number, since it uses less digits than its factorization.

204552655066656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357090185 (or 357090168 counting only the distinct ones).

The product of its (nonzero) digits is 388800000, while the sum is 63.

The spelling of 204552655066656 in words is "two hundred four trillion, five hundred fifty-two billion, six hundred fifty-five million, sixty-six thousand, six hundred fifty-six".