12234879649 has 4 divisors (see below), whose sum is σ = 12235430020. Its totient is φ = 12234329280.

The previous prime is 12234879641. The next prime is 12234879653. The reversal of 12234879649 is 94697843221.

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 4200984225 + 8033895424 = 64815^2 + 89632^2 .

It is a cyclic number.

It is not a de Polignac number, because 12234879649 - 2³ = 12234879641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12234879649.

It is not an unprimeable number, because it can be changed into a prime (12234879641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240372 + ... + 286789.

It is an arithmetic number, because the mean of its divisors is an integer number (3058857505).

Almost surely, 2^12234879649 is an apocalyptic number.

It is an amenable number.

12234879649 is a deficient number, since it is larger than the sum of its proper divisors (550371).

12234879649 is an equidigital number, since it uses as much as digits as its factorization.

12234879649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550370.

The product of its digits is 5225472, while the sum is 55.

The spelling of 12234879649 in words is "twelve billion, two hundred thirty-four million, eight hundred seventy-nine thousand, six hundred forty-nine".