12444563636640 has 96 divisors (see below), whose sum is σ = 43555972743360. Its totient is φ = 3318550301952.

The previous prime is 12444563636627. The next prime is 12444563636651. The reversal of 12444563636640 is 4663636544421.

12444563636640 is a `hidden beast` number, since 1 + 2 + 4 + 4 + 4 + 563 + 6 + 36 + 6 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 1440338694 + ... + 1440347333.

It is an arithmetic number, because the mean of its divisors is an integer number (453708049410).

Almost surely, 2^{12444563636640} is an apocalyptic number.

12444563636640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12444563636640 is an abundant number, since it is smaller than the sum of its proper divisors (31111409106720).

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

12444563636640 is a wasteful number, since it uses less digits than its factorization.

12444563636640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2880686051 (or 2880686037 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 54.

The spelling of 12444563636640 in words is "twelve trillion, four hundred forty-four billion, five hundred sixty-three million, six hundred thirty-six thousand, six hundred forty".