144285728729 has 4 divisors (see below), whose sum is σ = 144491557860. Its totient is φ = 144079899600.

The previous prime is 144285728689. The next prime is 144285728749. The reversal of 144285728729 is 927827582441.

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 85467353104 + 58818375625 = 292348^2 + 242525^2 .

It is a cyclic number.

It is not a de Polignac number, because 144285728729 - 2⁸ = 144285728473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144285728749) 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, 102913514 + ... + 102914915.

It is an arithmetic number, because the mean of its divisors is an integer number (36122889465).

Almost surely, 2^144285728729 is an apocalyptic number.

It is an amenable number.

144285728729 is a deficient number, since it is larger than the sum of its proper divisors (205829131).

144285728729 is an equidigital number, since it uses as much as digits as its factorization.

144285728729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205829130.

The product of its digits is 18063360, while the sum is 59.

The spelling of 144285728729 in words is "one hundred forty-four billion, two hundred eighty-five million, seven hundred twenty-eight thousand, seven hundred twenty-nine".