12642440553524 has 24 divisors (see below), whose sum is σ = 22299129861120. Its totient is φ = 6271263504576.

The previous prime is 12642440553521. The next prime is 12642440553541. The reversal of 12642440553524 is 42535504424621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12642440553521) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 17930447 + ... + 18622185.

It is an arithmetic number, because the mean of its divisors is an integer number (929130410880).

Almost surely, 2^{12642440553524} is an apocalyptic number.

It is an amenable number.

12642440553524 is a deficient number, since it is larger than the sum of its proper divisors (9656689307596).

12642440553524 is a wasteful number, since it uses less digits than its factorization.

12642440553524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727847 (or 727845 counting only the distinct ones).

The product of its (nonzero) digits is 4608000, while the sum is 47.

The spelling of 12642440553524 in words is "twelve trillion, six hundred forty-two billion, four hundred forty million, five hundred fifty-three thousand, five hundred twenty-four".