82117845660 has 24 divisors (see below), whose sum is σ = 229929968016. Its totient is φ = 21898092160.

The previous prime is 82117845659. The next prime is 82117845697. The reversal of 82117845660 is 6654871128.

It is a congruent number.

It is an unprimeable number.

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, 684315321 + ... + 684315440.

It is an arithmetic number, because the mean of its divisors is an integer number (9580415334).

Almost surely, 2^82117845660 is an apocalyptic number.

It is an amenable number.

82117845660 is an abundant number, since it is smaller than the sum of its proper divisors (147812122356).

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

82117845660 is a wasteful number, since it uses less digits than its factorization.

82117845660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368630773 (or 1368630771 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 82117845660 in words is "eighty-two billion, one hundred seventeen million, eight hundred forty-five thousand, six hundred sixty".