79717935972 has 24 divisors (see below), whose sum is σ = 186237896992. Its totient is φ = 26539876800.

The previous prime is 79717935971. The next prime is 79717935989. The reversal of 79717935972 is 27953971797.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (79717935971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4085929 + ... + 4105392.

Almost surely, 2^79717935972 is an apocalyptic number.

It is an amenable number.

79717935972 is an abundant number, since it is smaller than the sum of its proper divisors (106519961020).

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

79717935972 is a wasteful number, since it uses less digits than its factorization.

79717935972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8192139 (or 8192137 counting only the distinct ones).

The product of its digits is 52509870, while the sum is 66.

The spelling of 79717935972 in words is "seventy-nine billion, seven hundred seventeen million, nine hundred thirty-five thousand, nine hundred seventy-two".