204223015553 has 4 divisors (see below), whose sum is σ = 204271632708. Its totient is φ = 204174398400.

The previous prime is 204223015531. The next prime is 204223015583. The reversal of 204223015553 is 355510322402.

204223015553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 98707187329 + 105515828224 = 314177^2 + 324832^2 .

It is a cyclic number.

It is not a de Polignac number, because 204223015553 - 2¹⁰ = 204223014529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (204223015583) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 24302276 + ... + 24310677.

It is an arithmetic number, because the mean of its divisors is an integer number (51067908177).

Almost surely, 2^204223015553 is an apocalyptic number.

It is an amenable number.

204223015553 is a deficient number, since it is larger than the sum of its proper divisors (48617155).

204223015553 is an equidigital number, since it uses as much as digits as its factorization.

204223015553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48617154.

The product of its (nonzero) digits is 36000, while the sum is 32.

Adding to 204223015553 its reverse (355510322402), we get a palindrome (559733337955).

The spelling of 204223015553 in words is "two hundred four billion, two hundred twenty-three million, fifteen thousand, five hundred fifty-three".