204663631136664 has 32 divisors (see below), whose sum is σ = 584753231819520. Its totient is φ = 58475323181856.

The previous prime is 204663631136527. The next prime is 204663631136669. The reversal of 204663631136664 is 466631136366402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204663631136669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 609117949644 + ... + 609117949979.

It is an arithmetic number, because the mean of its divisors is an integer number (18273538494360).

Almost surely, 2^{204663631136664} is an apocalyptic number.

204663631136664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

204663631136664 is an abundant number, since it is smaller than the sum of its proper divisors (380089600682856).

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

204663631136664 is a wasteful number, since it uses less digits than its factorization.

204663631136664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218235899639 (or 1218235899635 counting only the distinct ones).

The product of its (nonzero) digits is 40310784, while the sum is 57.

The spelling of 204663631136664 in words is "two hundred four trillion, six hundred sixty-three billion, six hundred thirty-one million, one hundred thirty-six thousand, six hundred sixty-four".