204113600123 has 4 divisors (see below), whose sum is σ = 204114718488. Its totient is φ = 204112481760.

The previous prime is 204113600107. The next prime is 204113600147. The reversal of 204113600123 is 321006311402.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 204113600123 - 2⁴ = 204113600107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204113600183) 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, 214661 + ... + 674022.

It is an arithmetic number, because the mean of its divisors is an integer number (51028679622).

Almost surely, 2^204113600123 is an apocalyptic number.

204113600123 is a deficient number, since it is larger than the sum of its proper divisors (1118365).

204113600123 is an equidigital number, since it uses as much as digits as its factorization.

204113600123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118364.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 204113600123 its reverse (321006311402), we get a palindrome (525119911525).

The spelling of 204113600123 in words is "two hundred four billion, one hundred thirteen million, six hundred thousand, one hundred twenty-three".