12289568957 has 4 divisors (see below), whose sum is σ = 13012484796. Its totient is φ = 11566653120.

The previous prime is 12289568933. The next prime is 12289568969. The reversal of 12289568957 is 75986598221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75986598221 = 173917 ⋅436913.

It can be written as a sum of positive squares in 2 ways, for example, as 6703351876 + 5586217081 = 81874^2 + 74741^2 .

It is not a de Polignac number, because 12289568957 - 2¹⁰ = 12289567933 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12289568957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12289561957) 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, 361457894 + ... + 361457927.

It is an arithmetic number, because the mean of its divisors is an integer number (3253121199).

Almost surely, 2^12289568957 is an apocalyptic number.

12289568957 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12289568957 is a deficient number, since it is larger than the sum of its proper divisors (722915839).

12289568957 is an equidigital number, since it uses as much as digits as its factorization.

12289568957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722915838.

The product of its digits is 21772800, while the sum is 62.

The spelling of 12289568957 in words is "twelve billion, two hundred eighty-nine million, five hundred sixty-eight thousand, nine hundred fifty-seven".