144554321209 has 3 divisors (see below), whose sum is σ = 144554701413. Its totient is φ = 144553941006.

The previous prime is 144554321183. The next prime is 144554321221. The reversal of 144554321209 is 902123455441.

The square root of 144554321209 is 380203.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 144554321209 - 2⁷ = 144554321081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144554321309) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 190102 + ... + 570304.

It is an arithmetic number, because the mean of its divisors is an integer number (48184900471).

Almost surely, 2^144554321209 is an apocalyptic number.

144554321209 is the 380203-rd square number.

144554321209 is the 190102-nd centered octagonal number.

It is an amenable number.

144554321209 is a deficient number, since it is larger than the sum of its proper divisors (380204).

144554321209 is an frugal number, since it uses more digits than its factorization.

144554321209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760406 (or 380203 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 144554321209 in words is "one hundred forty-four billion, five hundred fifty-four million, three hundred twenty-one thousand, two hundred nine".