144665420623 has 4 divisors (see below), whose sum is σ = 144695370688. Its totient is φ = 144635470560.

The previous prime is 144665420617. The next prime is 144665420651. The reversal of 144665420623 is 326024566441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 144665420623 - 2²⁵ = 144631866191 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144665420623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144665420323) 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, 14967786 + ... + 14977447.

It is an arithmetic number, because the mean of its divisors is an integer number (36173842672).

Almost surely, 2^144665420623 is an apocalyptic number.

144665420623 is a deficient number, since it is larger than the sum of its proper divisors (29950065).

144665420623 is an equidigital number, since it uses as much as digits as its factorization.

144665420623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29950064.

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 144665420623 in words is "one hundred forty-four billion, six hundred sixty-five million, four hundred twenty thousand, six hundred twenty-three".