204818618808 has 48 divisors (see below), whose sum is σ = 556393039800. Its totient is φ = 68066602560.

The previous prime is 204818618761. The next prime is 204818618813. The reversal of 204818618808 is 808816818402.

204818618808 is a `hidden beast` number, since 2 + 0 + 4 + 8 + 18 + 618 + 8 + 0 + 8 = 666.

It is a super-2 number, since 2×204818618808² (a number of 23 digits) contains 22 as substring.

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 in 11 ways as a sum of consecutive naturals, for example, 4273303 + ... + 4320966.

Almost surely, 2^204818618808 is an apocalyptic number.

It is an amenable number.

204818618808 is an abundant number, since it is smaller than the sum of its proper divisors (351574420992).

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

204818618808 is a wasteful number, since it uses less digits than its factorization.

204818618808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8594612 (or 8594605 counting only the distinct ones).

The product of its (nonzero) digits is 1572864, while the sum is 54.

The spelling of 204818618808 in words is "two hundred four billion, eight hundred eighteen million, six hundred eighteen thousand, eight hundred eight".