79517287916 has 24 divisors (see below), whose sum is σ = 151873720320. Its totient is φ = 36128034000.

The previous prime is 79517287907. The next prime is 79517287919. The reversal of 79517287916 is 61978271597.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (79517287919) by changing a digit.

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, 305060 + ... + 502091.

It is an arithmetic number, because the mean of its divisors is an integer number (6328071680).

Almost surely, 2^79517287916 is an apocalyptic number.

It is an amenable number.

79517287916 is a deficient number, since it is larger than the sum of its proper divisors (72356432404).

79517287916 is a wasteful number, since it uses less digits than its factorization.

79517287916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809405 (or 809403 counting only the distinct ones).

The product of its digits is 13335840, while the sum is 62.

The spelling of 79517287916 in words is "seventy-nine billion, five hundred seventeen million, two hundred eighty-seven thousand, nine hundred sixteen".