12032320540 has 24 divisors (see below), whose sum is σ = 25805489472. Its totient is φ = 4710525120.

The previous prime is 12032320507. The next prime is 12032320549. The reversal of 12032320540 is 4502323021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12032320549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6399231 + ... + 6401110.

It is an arithmetic number, because the mean of its divisors is an integer number (1075228728).

Almost surely, 2^12032320540 is an apocalyptic number.

12032320540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12032320540 is an abundant number, since it is smaller than the sum of its proper divisors (13773168932).

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

12032320540 is a wasteful number, since it uses less digits than its factorization.

12032320540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12800397 (or 12800395 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 12032320540 its reverse (4502323021), we get a palindrome (16534643561).

The spelling of 12032320540 in words is "twelve billion, thirty-two million, three hundred twenty thousand, five hundred forty".