79923544064 has 256 divisors, whose sum is σ = 201113808000. Its totient is φ = 31560302592.

The previous prime is 79923543991. The next prime is 79923544073. The reversal of 79923544064 is 46044532997.

It is a tau number, because it is divible by the number of its divisors (256).

It is a junction number, because it is equal to n+sod(n) for n = 79923543997 and 79923544015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146112239 + ... + 146112785.

Almost surely, 2^79923544064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79923544064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100556904000).

79923544064 is an abundant number, since it is smaller than the sum of its proper divisors (121190263936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79923544064 is an frugal number, since it uses more digits than its factorization.

79923544064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611 (or 569 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 53.

The spelling of 79923544064 in words is "seventy-nine billion, nine hundred twenty-three million, five hundred forty-four thousand, sixty-four".