12344555566789 has 4 divisors (see below), whose sum is σ = 12354000522624. Its totient is φ = 12335110610956.

The previous prime is 12344555566753. The next prime is 12344555566799. The reversal of 12344555566789 is 98766555544321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12344555566789 - 2⁷ = 12344555566661 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12344555566799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4722475957 + ... + 4722478570.

It is an arithmetic number, because the mean of its divisors is an integer number (3088500130656).

Almost surely, 2^{12344555566789} is an apocalyptic number.

It is an amenable number.

12344555566789 is a deficient number, since it is larger than the sum of its proper divisors (9444955835).

12344555566789 is an equidigital number, since it uses as much as digits as its factorization.

12344555566789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9444955834.

The product of its digits is 1088640000, while the sum is 70.

The spelling of 12344555566789 in words is "twelve trillion, three hundred forty-four billion, five hundred fifty-five million, five hundred sixty-six thousand, seven hundred eighty-nine".