204008220417 has 16 divisors (see below), whose sum is σ = 278382633408. Its totient is φ = 132820685760.

The previous prime is 204008220389. The next prime is 204008220443. The reversal of 204008220417 is 714022800402.

It is not a de Polignac number, because 204008220417 - 2⁸ = 204008220161 is a prime.

It is a super-2 number, since 2×204008220417² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204008220457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 675403 + ... + 929615.

It is an arithmetic number, because the mean of its divisors is an integer number (17398914588).

Almost surely, 2^204008220417 is an apocalyptic number.

It is an amenable number.

204008220417 is a deficient number, since it is larger than the sum of its proper divisors (74374412991).

204008220417 is a wasteful number, since it uses less digits than its factorization.

204008220417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260480.

The product of its (nonzero) digits is 7168, while the sum is 30.

The spelling of 204008220417 in words is "two hundred four billion, eight million, two hundred twenty thousand, four hundred seventeen".