12821046563 has 4 divisors (see below), whose sum is σ = 13807280928. Its totient is φ = 11834812200.

The previous prime is 12821046559. The next prime is 12821046571. The reversal of 12821046563 is 36564012821.

12821046563 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 12821046563 - 2² = 12821046559 is a prime.

It is a super-2 number, since 2×12821046563² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12821046463) 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, 493117163 + ... + 493117188.

It is an arithmetic number, because the mean of its divisors is an integer number (3451820232).

Almost surely, 2^12821046563 is an apocalyptic number.

12821046563 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12821046563 is a deficient number, since it is larger than the sum of its proper divisors (986234365).

12821046563 is an equidigital number, since it uses as much as digits as its factorization.

12821046563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986234364.

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 12821046563 in words is "twelve billion, eight hundred twenty-one million, forty-six thousand, five hundred sixty-three".