204100455403 has 4 divisors (see below), whose sum is σ = 219800490448. Its totient is φ = 188400420360.

The previous prime is 204100455353. The next prime is 204100455421. The reversal of 204100455403 is 304554001402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204100455403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204100455103) 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 3 ways as a sum of consecutive naturals, for example, 7850017503 + ... + 7850017528.

It is an arithmetic number, because the mean of its divisors is an integer number (54950122612).

Almost surely, 2^204100455403 is an apocalyptic number.

204100455403 is a deficient number, since it is larger than the sum of its proper divisors (15700035045).

204100455403 is a wasteful number, since it uses less digits than its factorization.

204100455403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15700035044.

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 204100455403 its reverse (304554001402), we get a palindrome (508654456805).

The spelling of 204100455403 in words is "two hundred four billion, one hundred million, four hundred fifty-five thousand, four hundred three".