79871680672 has 48 divisors (see below), whose sum is σ = 179833372992. Its totient is φ = 34207464960.

The previous prime is 79871680663. The next prime is 79871680697. The reversal of 79871680672 is 27608617897.

It is a self number, because there is not a number n which added to its sum of digits gives 79871680672.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211363 + ... + 452125.

It is an arithmetic number, because the mean of its divisors is an integer number (3746528604).

Almost surely, 2^79871680672 is an apocalyptic number.

It is an amenable number.

79871680672 is an abundant number, since it is smaller than the sum of its proper divisors (99961692320).

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

79871680672 is a wasteful number, since it uses less digits than its factorization.

79871680672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242261 (or 242253 counting only the distinct ones).

The product of its (nonzero) digits is 14224896, while the sum is 61.

The spelling of 79871680672 in words is "seventy-nine billion, eight hundred seventy-one million, six hundred eighty thousand, six hundred seventy-two".