12717323453 has 4 divisors (see below), whose sum is σ = 12717759900. Its totient is φ = 12716887008.

The previous prime is 12717323449. The next prime is 12717323459. The reversal of 12717323453 is 35432371721.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35432371721 = 19471 ⋅1819751.

It can be written as a sum of positive squares in 2 ways, for example, as 9254824804 + 3462498649 = 96202^2 + 58843^2 .

It is a cyclic number.

It is not a de Polignac number, because 12717323453 - 2² = 12717323449 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 (12717323459) 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, 171128 + ... + 233921.

It is an arithmetic number, because the mean of its divisors is an integer number (3179439975).

Almost surely, 2^12717323453 is an apocalyptic number.

It is an amenable number.

12717323453 is a deficient number, since it is larger than the sum of its proper divisors (436447).

12717323453 is an equidigital number, since it uses as much as digits as its factorization.

12717323453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436446.

The product of its digits is 105840, while the sum is 38.

The spelling of 12717323453 in words is "twelve billion, seven hundred seventeen million, three hundred twenty-three thousand, four hundred fifty-three".