204502434145 has 8 divisors (see below), whose sum is σ = 245571823656. Its totient is φ = 163489345536.

The previous prime is 204502434137. The next prime is 204502434173. The reversal of 204502434145 is 541434205402.

204502434145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 88002409104 + 116500025041 = 296652^2 + 341321^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204502434145 - 2³ = 204502434137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204502434145.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14067232 + ... + 14081761.

It is an arithmetic number, because the mean of its divisors is an integer number (30696477957).

Almost surely, 2^204502434145 is an apocalyptic number.

It is an amenable number.

204502434145 is a deficient number, since it is larger than the sum of its proper divisors (41069389511).

204502434145 is a wasteful number, since it uses less digits than its factorization.

204502434145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28150451.

The product of its (nonzero) digits is 76800, while the sum is 34.

Adding to 204502434145 its reverse (541434205402), we get a palindrome (745936639547).

The spelling of 204502434145 in words is "two hundred four billion, five hundred two million, four hundred thirty-four thousand, one hundred forty-five".