204603426566 has 48 divisors (see below), whose sum is σ = 390485422080. Its totient is φ = 79507325520.

The previous prime is 204603426563. The next prime is 204603426569. The reversal of 204603426566 is 665624306402.

It is an interprime number because it is at equal distance from previous prime (204603426563) and next prime (204603426569).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204603426563) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 165095 + ... + 660653.

It is an arithmetic number, because the mean of its divisors is an integer number (8135112960).

Almost surely, 2^204603426566 is an apocalyptic number.

204603426566 is a deficient number, since it is larger than the sum of its proper divisors (185881995514).

204603426566 is a wasteful number, since it uses less digits than its factorization.

204603426566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495969 (or 495962 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 44.

The spelling of 204603426566 in words is "two hundred four billion, six hundred three million, four hundred twenty-six thousand, five hundred sixty-six".