204435214123 has 24 divisors (see below), whose sum is σ = 245712307680. Its totient is φ = 169502336640.

The previous prime is 204435214117. The next prime is 204435214189. The reversal of 204435214123 is 321412534402.

It is a de Polignac number, because none of the positive numbers 2^k-204435214123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204435214103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 369978 + ... + 738751.

It is an arithmetic number, because the mean of its divisors is an integer number (10238012820).

Almost surely, 2^204435214123 is an apocalyptic number.

204435214123 is a deficient number, since it is larger than the sum of its proper divisors (41277093557).

204435214123 is a wasteful number, since it uses less digits than its factorization.

204435214123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108867 (or 1108860 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 204435214123 its reverse (321412534402), we get a palindrome (525847748525).

The spelling of 204435214123 in words is "two hundred four billion, four hundred thirty-five million, two hundred fourteen thousand, one hundred twenty-three".