204409517008 has 40 divisors (see below), whose sum is σ = 418228499520. Its totient is φ = 96514179840.

The previous prime is 204409516991. The next prime is 204409517009. The reversal of 204409517008 is 800715904402.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204409517009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 986485 + ... + 1175572.

It is an arithmetic number, because the mean of its divisors is an integer number (10455712488).

Almost surely, 2^204409517008 is an apocalyptic number.

It is an amenable number.

204409517008 is an abundant number, since it is smaller than the sum of its proper divisors (213818982512).

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

204409517008 is a wasteful number, since it uses less digits than its factorization.

204409517008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162395 (or 2162389 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 204409517008 in words is "two hundred four billion, four hundred nine million, five hundred seventeen thousand, eight".