204363641666 has 8 divisors (see below), whose sum is σ = 306549529344. Its totient is φ = 102180465220.

The previous prime is 204363641659. The next prime is 204363641687. The reversal of 204363641666 is 666146363402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 204363641666.

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, 477530 + ... + 797973.

It is an arithmetic number, because the mean of its divisors is an integer number (38318691168).

Almost surely, 2^204363641666 is an apocalyptic number.

204363641666 is a deficient number, since it is larger than the sum of its proper divisors (102185887678).

204363641666 is a wasteful number, since it uses less digits than its factorization.

204363641666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355616.

The product of its (nonzero) digits is 2239488, while the sum is 47.

The spelling of 204363641666 in words is "two hundred four billion, three hundred sixty-three million, six hundred forty-one thousand, six hundred sixty-six".