12644144345611 has 4 divisors (see below), whose sum is σ = 12774496349272. Its totient is φ = 12513792341952.

The previous prime is 12644144345537. The next prime is 12644144345647. The reversal of 12644144345611 is 11654344144621.

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 12644144345611 - 2²⁹ = 12643607474699 is a prime.

It is a super-3 number, since 3×12644144345611³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12644144342611) 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, 65176001685 + ... + 65176001878.

It is an arithmetic number, because the mean of its divisors is an integer number (3193624087318).

Almost surely, 2^{12644144345611} is an apocalyptic number.

12644144345611 is a deficient number, since it is larger than the sum of its proper divisors (130352003661).

12644144345611 is an equidigital number, since it uses as much as digits as its factorization.

12644144345611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130352003660.

The product of its digits is 1105920, while the sum is 46.

The spelling of 12644144345611 in words is "twelve trillion, six hundred forty-four billion, one hundred forty-four million, three hundred forty-five thousand, six hundred eleven".