12555404312 has 48 divisors (see below), whose sum is σ = 27001159920. Its totient is φ = 5458861760.

The previous prime is 12555404299. The next prime is 12555404327. The reversal of 12555404312 is 21340455521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 259703 + ... + 304230.

It is an arithmetic number, because the mean of its divisors is an integer number (562524165).

Almost surely, 2^12555404312 is an apocalyptic number.

It is an amenable number.

12555404312 is an abundant number, since it is smaller than the sum of its proper divisors (14445755608).

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

12555404312 is a wasteful number, since it uses less digits than its factorization.

12555404312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563984 (or 563969 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 12555404312 its reverse (21340455521), we get a palindrome (33895859833).

The spelling of 12555404312 in words is "twelve billion, five hundred fifty-five million, four hundred four thousand, three hundred twelve".