12321052044540 has 96 divisors (see below), whose sum is σ = 36240503846400. Its totient is φ = 3121668692736.

The previous prime is 12321052044523. The next prime is 12321052044571. The reversal of 12321052044540 is 4544025012321.

It is a super-3 number, since 3×12321052044540³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29755114 + ... + 30166353.

It is an arithmetic number, because the mean of its divisors is an integer number (377505248400).

Almost surely, 2^{12321052044540} is an apocalyptic number.

12321052044540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12321052044540 is an abundant number, since it is smaller than the sum of its proper divisors (23919451801860).

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

12321052044540 is a wasteful number, since it uses less digits than its factorization.

12321052044540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59921651 (or 59921649 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 12321052044540 its reverse (4544025012321), we get a palindrome (16865077056861).

The spelling of 12321052044540 in words is "twelve trillion, three hundred twenty-one billion, fifty-two million, forty-four thousand, five hundred forty".