12844977789 has 8 divisors (see below), whose sum is σ = 19573299520. Its totient is φ = 7339987296.

The previous prime is 12844977787. The next prime is 12844977811. The reversal of 12844977789 is 98777944821.

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

It is not a de Polignac number, because 12844977789 - 2¹ = 12844977787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12844977787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305832784 + ... + 305832825.

It is an arithmetic number, because the mean of its divisors is an integer number (2446662440).

Almost surely, 2^12844977789 is an apocalyptic number.

It is an amenable number.

12844977789 is a deficient number, since it is larger than the sum of its proper divisors (6728321731).

12844977789 is an equidigital number, since it uses as much as digits as its factorization.

12844977789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611665619.

The product of its digits is 56899584, while the sum is 66.

The spelling of 12844977789 in words is "twelve billion, eight hundred forty-four million, nine hundred seventy-seven thousand, seven hundred eighty-nine".