144873105521 has 4 divisors (see below), whose sum is σ = 144914943552. Its totient is φ = 144831267492.

The previous prime is 144873105439. The next prime is 144873105557. The reversal of 144873105521 is 125501378441.

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: 125501378441 = 163 ⋅769947107.

It is a cyclic number.

It is not a de Polignac number, because 144873105521 - 2¹⁸ = 144872843377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144873105121) 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, 20913821 + ... + 20920746.

It is an arithmetic number, because the mean of its divisors is an integer number (36228735888).

Almost surely, 2^144873105521 is an apocalyptic number.

It is an amenable number.

144873105521 is a deficient number, since it is larger than the sum of its proper divisors (41838031).

144873105521 is an equidigital number, since it uses as much as digits as its factorization.

144873105521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41838030.

The product of its (nonzero) digits is 134400, while the sum is 41.

The spelling of 144873105521 in words is "one hundred forty-four billion, eight hundred seventy-three million, one hundred five thousand, five hundred twenty-one".