12844694785 has 8 divisors (see below), whose sum is σ = 16599297960. Its totient is φ = 9485313024.

The previous prime is 12844694741. The next prime is 12844694789. The reversal of 12844694785 is 58749644821.

It can be written as a sum of positive squares in 4 ways, for example, as 119049921 + 12725644864 = 10911^2 + 112808^2 .

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 12844694785 - 2¹⁷ = 12844563713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12844694789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98805280 + ... + 98805409.

It is an arithmetic number, because the mean of its divisors is an integer number (2074912245).

Almost surely, 2^12844694785 is an apocalyptic number.

It is an amenable number.

12844694785 is a deficient number, since it is larger than the sum of its proper divisors (3754603175).

12844694785 is a wasteful number, since it uses less digits than its factorization.

12844694785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197610707.

The product of its digits is 15482880, while the sum is 58.

The spelling of 12844694785 in words is "twelve billion, eight hundred forty-four million, six hundred ninety-four thousand, seven hundred eighty-five".