204603123403 has 24 divisors (see below), whose sum is σ = 244280216880. Its totient is φ = 170768666880.

The previous prime is 204603123371. The next prime is 204603123419. The reversal of 204603123403 is 304321306402.

It is not a de Polignac number, because 204603123403 - 2⁵ = 204603123371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204603123203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 953343 + ... + 1148071.

It is an arithmetic number, because the mean of its divisors is an integer number (10178342370).

Almost surely, 2^204603123403 is an apocalyptic number.

204603123403 is a deficient number, since it is larger than the sum of its proper divisors (39677093477).

204603123403 is a wasteful number, since it uses less digits than its factorization.

204603123403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195307 (or 195300 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 204603123403 its reverse (304321306402), we get a palindrome (508924429805).

The spelling of 204603123403 in words is "two hundred four billion, six hundred three million, one hundred twenty-three thousand, four hundred three".