79995117121968 has 80 divisors (see below), whose sum is σ = 213125000523776. Its totient is φ = 25839843644160.

The previous prime is 79995117121963. The next prime is 79995117122087. The reversal of 79995117121968 is 86912171159997.

It is a self number, because there is not a number n which added to its sum of digits gives 79995117121968.

It is not an unprimeable number, because it can be changed into a prime (79995117121963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152325763 + ... + 152850018.

Almost surely, 2^{79995117121968} is an apocalyptic number.

It is an amenable number.

79995117121968 is an abundant number, since it is smaller than the sum of its proper divisors (133129883401808).

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

79995117121968 is a wasteful number, since it uses less digits than its factorization.

79995117121968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305175962 (or 305175956 counting only the distinct ones).

The product of its digits is 154314720, while the sum is 75.

The spelling of 79995117121968 in words is "seventy-nine trillion, nine hundred ninety-five billion, one hundred seventeen million, one hundred twenty-one thousand, nine hundred sixty-eight".