12086565819 has 4 divisors (see below), whose sum is σ = 16115421096. Its totient is φ = 8057710544.

The previous prime is 12086565793. The next prime is 12086565833. The reversal of 12086565819 is 91856568021.

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

It is a cyclic number.

It is not a de Polignac number, because 12086565819 - 2⁷ = 12086565691 is a prime.

It is a super-2 number, since 2×12086565819² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12086565119) 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, 2014427634 + ... + 2014427639.

It is an arithmetic number, because the mean of its divisors is an integer number (4028855274).

Almost surely, 2^12086565819 is an apocalyptic number.

12086565819 is a deficient number, since it is larger than the sum of its proper divisors (4028855277).

12086565819 is an equidigital number, since it uses as much as digits as its factorization.

12086565819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4028855276.

The product of its (nonzero) digits is 1036800, while the sum is 51.

The spelling of 12086565819 in words is "twelve billion, eighty-six million, five hundred sixty-five thousand, eight hundred nineteen".