144409378647 has 32 divisors (see below), whose sum is σ = 208555038720. Its totient is φ = 88582049280.

The previous prime is 144409378613. The next prime is 144409378699. The reversal of 144409378647 is 746873904441.

It is not a de Polignac number, because 144409378647 - 2²⁰ = 144408330071 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144409378747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 382603 + ... + 659699.

It is an arithmetic number, because the mean of its divisors is an integer number (6517344960).

Almost surely, 2^144409378647 is an apocalyptic number.

144409378647 is a deficient number, since it is larger than the sum of its proper divisors (64145660073).

144409378647 is a wasteful number, since it uses less digits than its factorization.

144409378647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277383.

The product of its (nonzero) digits is 16257024, while the sum is 57.

The spelling of 144409378647 in words is "one hundred forty-four billion, four hundred nine million, three hundred seventy-eight thousand, six hundred forty-seven".