204013321015503 has 8 divisors (see below), whose sum is σ = 272036447801008. Its totient is φ = 135999537453504.

The previous prime is 204013321015489. The next prime is 204013321015513. The reversal of 204013321015503 is 305510123310402.

204013321015503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 204013321015503 - 2²⁸ = 204013052580047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204013321015513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2335754926 + ... + 2335842267.

It is an arithmetic number, because the mean of its divisors is an integer number (34004555975126).

Almost surely, 2^{204013321015503} is an apocalyptic number.

204013321015503 is a deficient number, since it is larger than the sum of its proper divisors (68023126785505).

204013321015503 is a wasteful number, since it uses less digits than its factorization.

204013321015503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4671611753.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 204013321015503 its reverse (305510123310402), we get a palindrome (509523444325905).

The spelling of 204013321015503 in words is "two hundred four trillion, thirteen billion, three hundred twenty-one million, fifteen thousand, five hundred three".