204002353123 has 16 divisors (see below), whose sum is σ = 217293611040. Its totient is φ = 190856134656.

The previous prime is 204002353117. The next prime is 204002353133. The reversal of 204002353123 is 321353200402.

It is a cyclic number.

It is not a de Polignac number, because 204002353123 - 2⁵ = 204002353091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204002353133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4231488 + ... + 4279426.

It is an arithmetic number, because the mean of its divisors is an integer number (13580850690).

Almost surely, 2^204002353123 is an apocalyptic number.

204002353123 is a deficient number, since it is larger than the sum of its proper divisors (13291257917).

204002353123 is a wasteful number, since it uses less digits than its factorization.

204002353123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49446.

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 204002353123 its reverse (321353200402), we get a palindrome (525355553525).

The spelling of 204002353123 in words is "two hundred four billion, two million, three hundred fifty-three thousand, one hundred twenty-three".