12817183369 has 3 divisors (see below), whose sum is σ = 12817296583. Its totient is φ = 12817070156.

The previous prime is 12817183277. The next prime is 12817183387. The reversal of 12817183369 is 96338171821.

It is a happy number.

The square root of 12817183369 is 113213.

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

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.

It can be written as a sum of positive squares in only one way, i.e., 2205711225 + 10611472144 = 46965^2 + 103012^2 .

It is not a de Polignac number, because 12817183369 - 2³¹ = 10669699721 is a prime.

It is a super-2 number, since 2×12817183369² (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 (12817181369) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 56607 + ... + 169819.

Almost surely, 2^12817183369 is an apocalyptic number.

12817183369 is the 113213-rd square number.

12817183369 is the 56607-th centered octagonal number.

It is an amenable number.

12817183369 is a deficient number, since it is larger than the sum of its proper divisors (113214).

12817183369 is an frugal number, since it uses more digits than its factorization.

12817183369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226426 (or 113213 counting only the distinct ones).

The product of its digits is 435456, while the sum is 49.

Multiplying 12817183369 by its sum of digits (49), we get a square (628041985081 = 792491²).

The spelling of 12817183369 in words is "twelve billion, eight hundred seventeen million, one hundred eighty-three thousand, three hundred sixty-nine".