12169763849 has 4 divisors (see below), whose sum is σ = 12200418564. Its totient is φ = 12139109136.

The previous prime is 12169763839. The next prime is 12169763861. The reversal of 12169763849 is 94836796121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7551610000 + 4618153849 = 86900^2 + 67957^2 .

It is a cyclic number.

It is not a de Polignac number, because 12169763849 - 2¹² = 12169759753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12169763794 and 12169763803.

It is not an unprimeable number, because it can be changed into a prime (12169763819) 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 3 ways as a sum of consecutive naturals, for example, 15326762 + ... + 15327555.

It is an arithmetic number, because the mean of its divisors is an integer number (3050104641).

Almost surely, 2^12169763849 is an apocalyptic number.

It is an amenable number.

12169763849 is a deficient number, since it is larger than the sum of its proper divisors (30654715).

12169763849 is an equidigital number, since it uses as much as digits as its factorization.

12169763849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30654714.

The product of its digits is 3919104, while the sum is 56.

The spelling of 12169763849 in words is "twelve billion, one hundred sixty-nine million, seven hundred sixty-three thousand, eight hundred forty-nine".