144432539821 has 4 divisors (see below), whose sum is σ = 144610632544. Its totient is φ = 144254447100.

The previous prime is 144432539819. The next prime is 144432539827. The reversal of 144432539821 is 128935234441.

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 144432539821 - 2¹ = 144432539819 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 (144432539827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89045145 + ... + 89046766.

It is an arithmetic number, because the mean of its divisors is an integer number (36152658136).

Almost surely, 2^144432539821 is an apocalyptic number.

It is an amenable number.

144432539821 is a deficient number, since it is larger than the sum of its proper divisors (178092723).

144432539821 is an equidigital number, since it uses as much as digits as its factorization.

144432539821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178092722.

The product of its digits is 829440, while the sum is 46.

The spelling of 144432539821 in words is "one hundred forty-four billion, four hundred thirty-two million, five hundred thirty-nine thousand, eight hundred twenty-one".