6444536611979 has 8 divisors (see below), whose sum is σ = 6448071000000. Its totient is φ = 6441002499456.

The previous prime is 6444536611969. The next prime is 6444536612011. The reversal of 6444536611979 is 9791166354446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6444536611979 - 2¹⁶ = 6444536546443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6444536611969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61602014 + ... + 61706540.

It is an arithmetic number, because the mean of its divisors is an integer number (806008875000).

Almost surely, 2^{6444536611979} is an apocalyptic number.

6444536611979 is a deficient number, since it is larger than the sum of its proper divisors (3534388021).

6444536611979 is a wasteful number, since it uses less digits than its factorization.

6444536611979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137749.

The product of its digits is 117573120, while the sum is 65.

The spelling of 6444536611979 in words is "six trillion, four hundred forty-four billion, five hundred thirty-six million, six hundred eleven thousand, nine hundred seventy-nine".