82117027812 has 12 divisors (see below), whose sum is σ = 191606398256. Its totient is φ = 27372342600.

The previous prime is 82117027777. The next prime is 82117027831. The reversal of 82117027812 is 21872071128.

It is a tau number, because it is divible by the number of its divisors (12).

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, 3421542814 + ... + 3421542837.

Almost surely, 2^82117027812 is an apocalyptic number.

It is an amenable number.

82117027812 is an abundant number, since it is smaller than the sum of its proper divisors (109489370444).

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

82117027812 is a wasteful number, since it uses less digits than its factorization.

82117027812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6843085658 (or 6843085656 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 39.

The spelling of 82117027812 in words is "eighty-two billion, one hundred seventeen million, twenty-seven thousand, eight hundred twelve".