12443308309540 has 48 divisors (see below), whose sum is σ = 27506731633920. Its totient is φ = 4715278168320.

The previous prime is 12443308309513. The next prime is 12443308309577. The reversal of 12443308309540 is 4590380334421.

12443308309540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×12443308309540³ (a number of 40 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24905224 + ... + 25399936.

It is an arithmetic number, because the mean of its divisors is an integer number (573056909040).

Almost surely, 2^{12443308309540} is an apocalyptic number.

12443308309540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12443308309540 is an abundant number, since it is smaller than the sum of its proper divisors (15063423324380).

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

12443308309540 is a wasteful number, since it uses less digits than its factorization.

12443308309540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560932 (or 560930 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 46.

The spelling of 12443308309540 in words is "twelve trillion, four hundred forty-three billion, three hundred eight million, three hundred nine thousand, five hundred forty".