144421025065 has 16 divisors (see below), whose sum is σ = 173628137088. Its totient is φ = 115321683456.

The previous prime is 144421025003. The next prime is 144421025081. The reversal of 144421025065 is 560520124441.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144421025065 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 144421025065.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11256244 + ... + 11269066.

It is an arithmetic number, because the mean of its divisors is an integer number (10851758568).

Almost surely, 2^144421025065 is an apocalyptic number.

It is an amenable number.

144421025065 is a deficient number, since it is larger than the sum of its proper divisors (29207112023).

144421025065 is a wasteful number, since it uses less digits than its factorization.

144421025065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16848.

The product of its (nonzero) digits is 38400, while the sum is 34.

The spelling of 144421025065 in words is "one hundred forty-four billion, four hundred twenty-one million, twenty-five thousand, sixty-five".