144617318773 has 4 divisors (see below), whose sum is σ = 144755181900. Its totient is φ = 144479455648.

The previous prime is 144617318759. The next prime is 144617318873. The reversal of 144617318773 is 377813716441.

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 136576071844 + 8041246929 = 369562^2 + 89673^2 .

It is a cyclic number.

It is not a de Polignac number, because 144617318773 - 2²⁵ = 144583764341 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 144617318773.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144617318723) 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, 68929990 + ... + 68932087.

It is an arithmetic number, because the mean of its divisors is an integer number (36188795475).

Almost surely, 2^144617318773 is an apocalyptic number.

It is an amenable number.

144617318773 is a deficient number, since it is larger than the sum of its proper divisors (137863127).

144617318773 is a wasteful number, since it uses less digits than its factorization.

144617318773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137863126.

The product of its digits is 2370816, while the sum is 52.

The spelling of 144617318773 in words is "one hundred forty-four billion, six hundred seventeen million, three hundred eighteen thousand, seven hundred seventy-three".