204820813264 has 20 divisors (see below), whose sum is σ = 398116349280. Its totient is φ = 102081110240.

The previous prime is 204820813201. The next prime is 204820813271. The reversal of 204820813264 is 462318028402.

It is a super-2 number, since 2×204820813264² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20575894 + ... + 20585845.

It is an arithmetic number, because the mean of its divisors is an integer number (19905817464).

Almost surely, 2^204820813264 is an apocalyptic number.

It is an amenable number.

204820813264 is a deficient number, since it is larger than the sum of its proper divisors (193295536016).

204820813264 is a wasteful number, since it uses less digits than its factorization.

204820813264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41162058 (or 41162052 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 40.

The spelling of 204820813264 in words is "two hundred four billion, eight hundred twenty million, eight hundred thirteen thousand, two hundred sixty-four".