12823811517 has 16 divisors (see below), whose sum is σ = 18658556928. Its totient is φ = 7769615280.

The previous prime is 12823811489. The next prime is 12823811563. The reversal of 12823811517 is 71511832821.

It is not a de Polignac number, because 12823811517 - 2⁶ = 12823811453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12823811587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52198 + ... + 168440.

It is an arithmetic number, because the mean of its divisors is an integer number (1166159808).

Almost surely, 2^12823811517 is an apocalyptic number.

It is an amenable number.

12823811517 is a deficient number, since it is larger than the sum of its proper divisors (5834745411).

12823811517 is a wasteful number, since it uses less digits than its factorization.

12823811517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119600.

The product of its digits is 26880, while the sum is 39.

The spelling of 12823811517 in words is "twelve billion, eight hundred twenty-three million, eight hundred eleven thousand, five hundred seventeen".