144656985793 has 4 divisors (see below), whose sum is σ = 145219853700. Its totient is φ = 144094117888.

The previous prime is 144656985779. The next prime is 144656985853. The reversal of 144656985793 is 397589656441.

144656985793 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 397589656441 = 41813 ⋅9508757.

It can be written as a sum of positive squares in 2 ways, for example, as 138169810944 + 6487174849 = 371712^2 + 80543^2 .

It is a cyclic number.

It is not a de Polignac number, because 144656985793 - 2⁵ = 144656985761 is a prime.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144656985743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281433568 + ... + 281434081.

It is an arithmetic number, because the mean of its divisors is an integer number (36304963425).

Almost surely, 2^144656985793 is an apocalyptic number.

It is an amenable number.

144656985793 is a deficient number, since it is larger than the sum of its proper divisors (562867907).

144656985793 is an equidigital number, since it uses as much as digits as its factorization.

144656985793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562867906.

The product of its digits is 195955200, while the sum is 67.

The spelling of 144656985793 in words is "one hundred forty-four billion, six hundred fifty-six million, nine hundred eighty-five thousand, seven hundred ninety-three".