79644440084 has 24 divisors (see below), whose sum is σ = 160051029600. Its totient is φ = 34296648480.

The previous prime is 79644440077. The next prime is 79644440093. The reversal of 79644440084 is 48004444697.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47633399 + ... + 47635070.

It is an arithmetic number, because the mean of its divisors is an integer number (6668792900).

Almost surely, 2^79644440084 is an apocalyptic number.

It is an amenable number.

79644440084 is an abundant number, since it is smaller than the sum of its proper divisors (80406589516).

79644440084 is a wasteful number, since it uses less digits than its factorization.

79644440084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95268503 (or 95268501 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 50.

The spelling of 79644440084 in words is "seventy-nine billion, six hundred forty-four million, four hundred forty thousand, eighty-four".