144384453821 has 4 divisors (see below), whose sum is σ = 145068740544. Its totient is φ = 143700167100.

The previous prime is 144384453817. The next prime is 144384453823. The reversal of 144384453821 is 128354483441.

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.

It is a cyclic number.

It is not a de Polignac number, because 144384453821 - 2² = 144384453817 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 (144384453823) 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, 342143045 + ... + 342143466.

It is an arithmetic number, because the mean of its divisors is an integer number (36267185136).

Almost surely, 2^144384453821 is an apocalyptic number.

It is an amenable number.

144384453821 is a deficient number, since it is larger than the sum of its proper divisors (684286723).

144384453821 is an equidigital number, since it uses as much as digits as its factorization.

144384453821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684286722.

The product of its digits is 1474560, while the sum is 47.

The spelling of 144384453821 in words is "one hundred forty-four billion, three hundred eighty-four million, four hundred fifty-three thousand, eight hundred twenty-one".