82219668717 has 16 divisors (see below), whose sum is σ = 118774244160. Its totient is φ = 50389070592.

The previous prime is 82219668709. The next prime is 82219668719. The reversal of 82219668717 is 71786691228.

It is not a de Polignac number, because 82219668717 - 2³ = 82219668709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82219668719) 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, 18743742 + ... + 18748127.

It is an arithmetic number, because the mean of its divisors is an integer number (7423390260).

Almost surely, 2^82219668717 is an apocalyptic number.

It is an amenable number.

82219668717 is a deficient number, since it is larger than the sum of its proper divisors (36554575443).

82219668717 is a wasteful number, since it uses less digits than its factorization.

82219668717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37491932.

The product of its digits is 4064256, while the sum is 57.

The spelling of 82219668717 in words is "eighty-two billion, two hundred nineteen million, six hundred sixty-eight thousand, seven hundred seventeen".