12643440542484 has 96 divisors (see below), whose sum is σ = 30317504093184. Its totient is φ = 4098755485440.

The previous prime is 12643440542479. The next prime is 12643440542503. The reversal of 12643440542484 is 48424504434621.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192870217 + ... + 192935759.

It is an arithmetic number, because the mean of its divisors is an integer number (315807334304).

Almost surely, 2^{12643440542484} is an apocalyptic number.

It is an amenable number.

12643440542484 is an abundant number, since it is smaller than the sum of its proper divisors (17674063550700).

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

12643440542484 is a wasteful number, since it uses less digits than its factorization.

12643440542484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67197 (or 67195 counting only the distinct ones).

The product of its (nonzero) digits is 11796480, while the sum is 51.

The spelling of 12643440542484 in words is "twelve trillion, six hundred forty-three billion, four hundred forty million, five hundred forty-two thousand, four hundred eighty-four".