204635161606 has 4 divisors (see below), whose sum is σ = 306952742412. Its totient is φ = 102317580802.

The previous prime is 204635161589. The next prime is 204635161637. The reversal of 204635161606 is 606161536402.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51158790400 + ... + 51158790403.

It is an arithmetic number, because the mean of its divisors is an integer number (76738185603).

Almost surely, 2^204635161606 is an apocalyptic number.

204635161606 is a deficient number, since it is larger than the sum of its proper divisors (102317580806).

204635161606 is a wasteful number, since it uses less digits than its factorization.

204635161606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102317580805.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 204635161606 in words is "two hundred four billion, six hundred thirty-five million, one hundred sixty-one thousand, six hundred six".