6644644333071 has 16 divisors (see below), whose sum is σ = 9065784862464. Its totient is φ = 4326638428224.

The previous prime is 6644644333049. The next prime is 6644644333081. The reversal of 6644644333071 is 1703334464466.

It is not a de Polignac number, because 6644644333071 - 2²¹ = 6644642235919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6644644333081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4794315 + ... + 6022851.

It is an arithmetic number, because the mean of its divisors is an integer number (566611553904).

Almost surely, 2^{6644644333071} is an apocalyptic number.

6644644333071 is a deficient number, since it is larger than the sum of its proper divisors (2421140529393).

6644644333071 is a wasteful number, since it uses less digits than its factorization.

6644644333071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270510.

The product of its (nonzero) digits is 10450944, while the sum is 51.

The spelling of 6644644333071 in words is "six trillion, six hundred forty-four billion, six hundred forty-four million, three hundred thirty-three thousand, seventy-one".