12642563363 has 4 divisors (see below), whose sum is σ = 12646448280. Its totient is φ = 12638678448.

The previous prime is 12642563359. The next prime is 12642563419. The reversal of 12642563363 is 36336524621.

12642563363 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12642563363 - 2² = 12642563359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12642563363.

It is not an unprimeable number, because it can be changed into a prime (12642563333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1937573 + ... + 1944086.

It is an arithmetic number, because the mean of its divisors is an integer number (3161612070).

Almost surely, 2^12642563363 is an apocalyptic number.

12642563363 is a deficient number, since it is larger than the sum of its proper divisors (3884917).

12642563363 is an equidigital number, since it uses as much as digits as its factorization.

12642563363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3884916.

The product of its digits is 466560, while the sum is 41.

The spelling of 12642563363 in words is "twelve billion, six hundred forty-two million, five hundred sixty-three thousand, three hundred sixty-three".