204308643326956 has 24 divisors (see below), whose sum is σ = 422707537919520. Its totient is φ = 84541507583232.

The previous prime is 204308643326903. The next prime is 204308643326989. The reversal of 204308643326956 is 659623346803402.

It is a junction number, because it is equal to n+sod(n) for n = 204308643326894 and 204308643326903.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 125805814045 + ... + 125805815668.

It is an arithmetic number, because the mean of its divisors is an integer number (17612814079980).

Almost surely, 2^{204308643326956} is an apocalyptic number.

It is an amenable number.

204308643326956 is an abundant number, since it is smaller than the sum of its proper divisors (218398894592564).

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

204308643326956 is a wasteful number, since it uses less digits than its factorization.

204308643326956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251611629753 (or 251611629751 counting only the distinct ones).

The product of its (nonzero) digits is 134369280, while the sum is 61.

The spelling of 204308643326956 in words is "two hundred four trillion, three hundred eight billion, six hundred forty-three million, three hundred twenty-six thousand, nine hundred fifty-six".