12432640536644 has 24 divisors (see below), whose sum is σ = 21819403484928. Its totient is φ = 6198529913280.

The previous prime is 12432640536587. The next prime is 12432640536671. The reversal of 12432640536644 is 44663504623421.

12432640536644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12432640536592 and 12432640536601.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10168817 + ... + 11325639.

It is an arithmetic number, because the mean of its divisors is an integer number (909141811872).

Almost surely, 2^{12432640536644} is an apocalyptic number.

It is an amenable number.

12432640536644 is a deficient number, since it is larger than the sum of its proper divisors (9386762948284).

12432640536644 is a wasteful number, since it uses less digits than its factorization.

12432640536644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164515 (or 1164513 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 50.

The spelling of 12432640536644 in words is "twelve trillion, four hundred thirty-two billion, six hundred forty million, five hundred thirty-six thousand, six hundred forty-four".