12669528481 has 3 divisors (see below), whose sum is σ = 12669641041. Its totient is φ = 12669415922.

The previous prime is 12669528463. The next prime is 12669528499. The reversal of 12669528481 is 18482596621.

The square root of 12669528481 is 112559.

It is a perfect power (a square), and thus also a powerful number.

12669528481 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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 18482596621 = 83 ⋅222681887.

It is an interprime number because it is at equal distance from previous prime (12669528463) and next prime (12669528499).

It is not a de Polignac number, because 12669528481 - 2¹⁹ = 12669004193 is a prime.

It is a super-2 number, since 2×12669528481² (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 (12669538481) 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 2 ways as a sum of consecutive naturals, for example, 56280 + ... + 168838.

Almost surely, 2^12669528481 is an apocalyptic number.

12669528481 is the 112559-th square number.

12669528481 is the 56280-th centered octagonal number.

It is an amenable number.

12669528481 is a deficient number, since it is larger than the sum of its proper divisors (112560).

12669528481 is an frugal number, since it uses more digits than its factorization.

12669528481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225118 (or 112559 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 52.

The spelling of 12669528481 in words is "twelve billion, six hundred sixty-nine million, five hundred twenty-eight thousand, four hundred eighty-one".