144644642071 has 4 divisors (see below), whose sum is σ = 144656413144. Its totient is φ = 144632871000.

The previous prime is 144644642057. The next prime is 144644642099. The reversal of 144644642071 is 170246446441.

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 144644642071 - 2⁷ = 144644641943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144644642771) 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, 5867085 + ... + 5891686.

It is an arithmetic number, because the mean of its divisors is an integer number (36164103286).

Almost surely, 2^144644642071 is an apocalyptic number.

144644642071 is a deficient number, since it is larger than the sum of its proper divisors (11771073).

144644642071 is a wasteful number, since it uses less digits than its factorization.

144644642071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11771072.

The product of its (nonzero) digits is 516096, while the sum is 43.

The spelling of 144644642071 in words is "one hundred forty-four billion, six hundred forty-four million, six hundred forty-two thousand, seventy-one".