12923687426369 has 4 divisors (see below), whose sum is σ = 12939276917460. Its totient is φ = 12908097935280.

The previous prime is 12923687426333. The next prime is 12923687426389. The reversal of 12923687426369 is 96362478632921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2389151393344 + 10534536033025 = 1545688^2 + 3245695^2 .

It is a cyclic number.

It is not a de Polignac number, because 12923687426369 - 2¹² = 12923687422273 is a prime.

It is a super-2 number, since 2×12923687426369² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12923687426299 and 12923687426308.

It is not an unprimeable number, because it can be changed into a prime (12923687426329) 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, 7794744302 + ... + 7794745959.

It is an arithmetic number, because the mean of its divisors is an integer number (3234819229365).

Almost surely, 2^{12923687426369} is an apocalyptic number.

It is an amenable number.

12923687426369 is a deficient number, since it is larger than the sum of its proper divisors (15589491091).

12923687426369 is an equidigital number, since it uses as much as digits as its factorization.

12923687426369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15589491090.

The product of its digits is 282175488, while the sum is 68.

The spelling of 12923687426369 in words is "twelve trillion, nine hundred twenty-three billion, six hundred eighty-seven million, four hundred twenty-six thousand, three hundred sixty-nine".