204485677685556 has 24 divisors (see below), whose sum is σ = 478989797543040. Its totient is φ = 67896671188992.

The previous prime is 204485677685483. The next prime is 204485677685573. The reversal of 204485677685556 is 655586776584402.

204485677685556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×204485677685556³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33152668396 + ... + 33152674563.

It is an arithmetic number, because the mean of its divisors is an integer number (19957908230960).

Almost surely, 2^{204485677685556} is an apocalyptic number.

It is an amenable number.

204485677685556 is an abundant number, since it is smaller than the sum of its proper divisors (274504119857484).

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

204485677685556 is a wasteful number, since it uses less digits than its factorization.

204485677685556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66305343223 (or 66305343221 counting only the distinct ones).

The product of its (nonzero) digits is 13547520000, while the sum is 78.

The spelling of 204485677685556 in words is "two hundred four trillion, four hundred eighty-five billion, six hundred seventy-seven million, six hundred eighty-five thousand, five hundred fifty-six".