12449118665 has 8 divisors (see below), whose sum is σ = 14961546888. Its totient is φ = 9944225280.

The previous prime is 12449118631. The next prime is 12449118677. The reversal of 12449118665 is 56681194421.

12449118665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3524915641 + 8924203024 = 59371^2 + 94468^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12449118665 - 2¹⁸ = 12448856521 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1880072 + ... + 1886681.

It is an arithmetic number, because the mean of its divisors is an integer number (1870193361).

Almost surely, 2^12449118665 is an apocalyptic number.

It is an amenable number.

12449118665 is a deficient number, since it is larger than the sum of its proper divisors (2512428223).

12449118665 is an equidigital number, since it uses as much as digits as its factorization.

12449118665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3767419.

The product of its digits is 414720, while the sum is 47.

The spelling of 12449118665 in words is "twelve billion, four hundred forty-nine million, one hundred eighteen thousand, six hundred sixty-five".