12655321232 has 20 divisors (see below), whose sum is σ = 24553158780. Its totient is φ = 6319022208.

The previous prime is 12655321219. The next prime is 12655321243. The reversal of 12655321232 is 23212355621.

It can be written as a sum of positive squares in 2 ways, for example, as 11570014096 + 1085307136 = 107564^2 + 32944^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 527807 + ... + 551262.

It is an arithmetic number, because the mean of its divisors is an integer number (1227657939).

Almost surely, 2^12655321232 is an apocalyptic number.

It is an amenable number.

12655321232 is a deficient number, since it is larger than the sum of its proper divisors (11897837548).

12655321232 is a wasteful number, since it uses less digits than its factorization.

12655321232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079810 (or 1079804 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

Adding to 12655321232 its reverse (23212355621), we get a palindrome (35867676853).

The spelling of 12655321232 in words is "twelve billion, six hundred fifty-five million, three hundred twenty-one thousand, two hundred thirty-two".