79717208791064 has 16 divisors (see below), whose sum is σ = 160967440828320. Its totient is φ = 36792557903520.

The previous prime is 79717208791057. The next prime is 79717208791079. The reversal of 79717208791064 is 46019780271797.

It is a junction number, because it is equal to n+sod(n) for n = 79717208790985 and 79717208791003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383255811392 + ... + 383255811599.

It is an arithmetic number, because the mean of its divisors is an integer number (10060465051770).

Almost surely, 2^{79717208791064} is an apocalyptic number.

It is an amenable number.

79717208791064 is an abundant number, since it is smaller than the sum of its proper divisors (81250232037256).

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

79717208791064 is a wasteful number, since it uses less digits than its factorization.

79717208791064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766511623010 (or 766511623006 counting only the distinct ones).

The product of its (nonzero) digits is 74680704, while the sum is 68.

The spelling of 79717208791064 in words is "seventy-nine trillion, seven hundred seventeen billion, two hundred eight million, seven hundred ninety-one thousand, sixty-four".