204208085445 has 64 divisors (see below), whose sum is σ = 415104958464. Its totient is φ = 83391586560.

The previous prime is 204208085443. The next prime is 204208085483. The reversal of 204208085445 is 544580802402.

It is not a de Polignac number, because 204208085445 - 2¹ = 204208085443 is a prime.

It is a super-4 number, since 4×204208085445⁴ (a number of 46 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 204208085397 and 204208085406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204208085441) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2370637 + ... + 2455266.

It is an arithmetic number, because the mean of its divisors is an integer number (6486014976).

Almost surely, 2^204208085445 is an apocalyptic number.

It is an amenable number.

204208085445 is an abundant number, since it is smaller than the sum of its proper divisors (210896873019).

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

204208085445 is a wasteful number, since it uses less digits than its factorization.

204208085445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4825962.

The product of its (nonzero) digits is 409600, while the sum is 42.

Adding to 204208085445 its reverse (544580802402), we get a palindrome (748788887847).

The spelling of 204208085445 in words is "two hundred four billion, two hundred eight million, eighty-five thousand, four hundred forty-five".