13123680869 has 4 divisors (see below), whose sum is σ = 14133194796. Its totient is φ = 12114166944.

The previous prime is 13123680853. The next prime is 13123680907. The reversal of 13123680869 is 96808632131.

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 3962702500 + 9160978369 = 62950^2 + 95713^2 .

It is a cyclic number.

It is not a de Polignac number, because 13123680869 - 2⁴ = 13123680853 is a prime.

It is a super-2 number, since 2×13123680869² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123680169) 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, 504756944 + ... + 504756969.

It is an arithmetic number, because the mean of its divisors is an integer number (3533298699).

Almost surely, 2^13123680869 is an apocalyptic number.

It is an amenable number.

13123680869 is a deficient number, since it is larger than the sum of its proper divisors (1009513927).

13123680869 is a wasteful number, since it uses less digits than its factorization.

13123680869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009513926.

The product of its (nonzero) digits is 373248, while the sum is 47.

The spelling of 13123680869 in words is "thirteen billion, one hundred twenty-three million, six hundred eighty thousand, eight hundred sixty-nine".