12689339799673 has 4 divisors (see below), whose sum is σ = 12689347134820. Its totient is φ = 12689332464528.

The previous prime is 12689339799641. The next prime is 12689339799707. The reversal of 12689339799673 is 37699793398621.

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 2 ways, for example, as 1846261347984 + 10843078451689 = 1358772^2 + 3292883^2 .

It is a cyclic number.

It is not a de Polignac number, because 12689339799673 - 2⁵ = 12689339799641 is a prime.

It is a super-2 number, since 2×12689339799673² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12689339799473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 524611 + ... + 5064967.

It is an arithmetic number, because the mean of its divisors is an integer number (3172336783705).

Almost surely, 2^{12689339799673} is an apocalyptic number.

It is an amenable number.

12689339799673 is a deficient number, since it is larger than the sum of its proper divisors (7335147).

12689339799673 is an equidigital number, since it uses as much as digits as its factorization.

12689339799673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7335146.

The product of its digits is 4999796928, while the sum is 82.

The spelling of 12689339799673 in words is "twelve trillion, six hundred eighty-nine billion, three hundred thirty-nine million, seven hundred ninety-nine thousand, six hundred seventy-three".