144432515545 has 4 divisors (see below), whose sum is σ = 173319018660. Its totient is φ = 115546012432.

The previous prime is 144432515503. The next prime is 144432515567. The reversal of 144432515545 is 545515234441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545515234441 = 32843 ⋅16609787.

It can be written as a sum of positive squares in 2 ways, for example, as 34148083264 + 110284432281 = 184792^2 + 332091^2 .

It is a cyclic number.

It is not a de Polignac number, because 144432515545 - 2¹¹ = 144432513497 is a prime.

It is an unprimeable number.

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, 14443251550 + ... + 14443251559.

It is an arithmetic number, because the mean of its divisors is an integer number (43329754665).

Almost surely, 2^144432515545 is an apocalyptic number.

It is an amenable number.

144432515545 is a deficient number, since it is larger than the sum of its proper divisors (28886503115).

144432515545 is an equidigital number, since it uses as much as digits as its factorization.

144432515545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28886503114.

The product of its digits is 960000, while the sum is 43.

Adding to 144432515545 its reverse (545515234441), we get a palindrome (689947749986).

The spelling of 144432515545 in words is "one hundred forty-four billion, four hundred thirty-two million, five hundred fifteen thousand, five hundred forty-five".