12080867569 has 3 divisors (see below), whose sum is σ = 12080977483. Its totient is φ = 12080757656.

The previous prime is 12080867567. The next prime is 12080867593. The reversal of 12080867569 is 96576808021.

The square root of 12080867569 is 109913.

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, and also an emirpimes, since its reverse is a distinct semiprime: 96576808021 = 61 ⋅1583226361.

It can be written as a sum of positive squares in only one way, i.e., 3674178225 + 8406689344 = 60615^2 + 91688^2 .

It is not a de Polignac number, because 12080867569 - 2¹ = 12080867567 is a prime.

It is a super-2 number, since 2×12080867569² (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 (12080867567) 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, 54957 + ... + 164869.

Almost surely, 2^12080867569 is an apocalyptic number.

12080867569 is the 109913-rd square number.

12080867569 is the 54957-th centered octagonal number.

It is an amenable number.

12080867569 is a deficient number, since it is larger than the sum of its proper divisors (109914).

12080867569 is an frugal number, since it uses more digits than its factorization.

12080867569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219826 (or 109913 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 52.

The spelling of 12080867569 in words is "twelve billion, eighty million, eight hundred sixty-seven thousand, five hundred sixty-nine".