204823870855968 has 192 divisors, whose sum is σ = 672586836187392. Its totient is φ = 53133916999680.

The previous prime is 204823870855957. The next prime is 204823870855987. The reversal of 204823870855968 is 869558078328402.

It is a self number, because there is not a number n which added to its sum of digits gives 204823870855968.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 191647071 + ... + 192712862.

It is an arithmetic number, because the mean of its divisors is an integer number (3503056438476).

Almost surely, 2^{204823870855968} is an apocalyptic number.

204823870855968 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

204823870855968 is an abundant number, since it is smaller than the sum of its proper divisors (467762965331424).

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

204823870855968 is a wasteful number, since it uses less digits than its factorization.

204823870855968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384360027 (or 384360019 counting only the distinct ones).

The product of its (nonzero) digits is 1857945600, while the sum is 75.

The spelling of 204823870855968 in words is "two hundred four trillion, eight hundred twenty-three billion, eight hundred seventy million, eight hundred fifty-five thousand, nine hundred sixty-eight".