204535535403 has 16 divisors (see below), whose sum is σ = 273659340416. Its totient is φ = 135884563200.

The previous prime is 204535535359. The next prime is 204535535443. The reversal of 204535535403 is 304535535402.

It is not a de Polignac number, because 204535535403 - 2¹⁶ = 204535469867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204535535443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4992603 + ... + 5033403.

It is an arithmetic number, because the mean of its divisors is an integer number (17103708776).

Almost surely, 2^204535535403 is an apocalyptic number.

204535535403 is a deficient number, since it is larger than the sum of its proper divisors (69123805013).

204535535403 is a wasteful number, since it uses less digits than its factorization.

204535535403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46554.

The product of its (nonzero) digits is 540000, while the sum is 39.

Subtracting 204535535403 from its reverse (304535535402), we obtain a palindrome (99999999999).

The spelling of 204535535403 in words is "two hundred four billion, five hundred thirty-five million, five hundred thirty-five thousand, four hundred three".