12159566 has 4 divisors (see below), whose sum is σ = 18239352. Its totient is φ = 6079782.

The previous prime is 12159559. The next prime is 12159611. The reversal of 12159566 is 66595121.

12159566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66595121 = 863 ⋅77167.

It is a super-4 number, since 4×12159566⁴ (a number of 29 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3039890 + ... + 3039893.

It is an arithmetic number, because the mean of its divisors is an integer number (4559838).

Almost surely, 2^12159566 is an apocalyptic number.

12159566 is a deficient number, since it is larger than the sum of its proper divisors (6079786).

12159566 is an equidigital number, since it uses as much as digits as its factorization.

12159566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6079785.

The product of its digits is 16200, while the sum is 35.

The square root of 12159566 is about 3487.0569252595. The cubic root of 12159566 is about 229.9531473562.

The spelling of 12159566 in words is "twelve million, one hundred fifty-nine thousand, five hundred sixty-six".