144332320309 has 4 divisors (see below), whose sum is σ = 151928758240. Its totient is φ = 136735882380.

The previous prime is 144332320283. The next prime is 144332320333. The reversal of 144332320309 is 903023233441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 903023233441 = 7 ⋅129003319063.

It is a cyclic number.

It is not a de Polignac number, because 144332320309 - 2²³ = 144323931701 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 (144332320339) 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, 3798218937 + ... + 3798218974.

It is an arithmetic number, because the mean of its divisors is an integer number (37982189560).

Almost surely, 2^144332320309 is an apocalyptic number.

144332320309 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

144332320309 is a deficient number, since it is larger than the sum of its proper divisors (7596437931).

144332320309 is an equidigital number, since it uses as much as digits as its factorization.

144332320309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7596437930.

The product of its (nonzero) digits is 46656, while the sum is 34.

The spelling of 144332320309 in words is "one hundred forty-four billion, three hundred thirty-two million, three hundred twenty thousand, three hundred nine".