82017217705 has 8 divisors (see below), whose sum is σ = 98436544704. Its totient is φ = 65603185200.

The previous prime is 82017217703. The next prime is 82017217721. The reversal of 82017217705 is 50771271028.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82017217705 - 2¹ = 82017217703 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82017217703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1289461 + ... + 1351570.

It is an arithmetic number, because the mean of its divisors is an integer number (12304568088).

Almost surely, 2^82017217705 is an apocalyptic number.

It is an amenable number.

82017217705 is a deficient number, since it is larger than the sum of its proper divisors (16419326999).

82017217705 is a wasteful number, since it uses less digits than its factorization.

82017217705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2647247.

The product of its (nonzero) digits is 54880, while the sum is 40.

The spelling of 82017217705 in words is "eighty-two billion, seventeen million, two hundred seventeen thousand, seven hundred five".