12523440204 has 36 divisors (see below), whose sum is σ = 34534336200. Its totient is φ = 3794981760.

The previous prime is 12523440203. The next prime is 12523440217. The reversal of 12523440204 is 40204432521.

12523440204 is a `hidden beast` number, since 1 + 25 + 234 + 402 + 0 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (12523440203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15812029 + ... + 15812820.

Almost surely, 2^12523440204 is an apocalyptic number.

It is an amenable number.

12523440204 is an abundant number, since it is smaller than the sum of its proper divisors (22010895996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12523440204 is a wasteful number, since it uses less digits than its factorization.

12523440204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31624870 (or 31624865 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 12523440204 its reverse (40204432521), we get a palindrome (52727872725).

The spelling of 12523440204 in words is "twelve billion, five hundred twenty-three million, four hundred forty thousand, two hundred four".