12884481805 has 8 divisors (see below), whose sum is σ = 16650715032. Its totient is φ = 9514694208.

The previous prime is 12884481751. The next prime is 12884481809. The reversal of 12884481805 is 50818448821.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 697646569 + 12186835236 = 26413^2 + 110394^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12884481805 - 2¹¹ = 12884479757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12884481809) 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, 99111334 + ... + 99111463.

It is an arithmetic number, because the mean of its divisors is an integer number (2081339379).

Almost surely, 2^12884481805 is an apocalyptic number.

It is an amenable number.

12884481805 is a deficient number, since it is larger than the sum of its proper divisors (3766233227).

12884481805 is a wasteful number, since it uses less digits than its factorization.

12884481805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198222815.

The product of its (nonzero) digits is 655360, while the sum is 49.

The spelling of 12884481805 in words is "twelve billion, eight hundred eighty-four million, four hundred eighty-one thousand, eight hundred five".