82642736221806 has 8 divisors (see below), whose sum is σ = 165285472443624. Its totient is φ = 27547578740600.

The previous prime is 82642736221751. The next prime is 82642736221813. The reversal of 82642736221806 is 60812263724628.

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

82642736221806 is an admirable number.

It is a congruent number.

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, 6886894685145 + ... + 6886894685156.

It is an arithmetic number, because the mean of its divisors is an integer number (20660684055453).

Almost surely, 2^{82642736221806} is an apocalyptic number.

82642736221806 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

82642736221806 is a wasteful number, since it uses less digits than its factorization.

82642736221806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13773789370306.

The product of its (nonzero) digits is 18579456, while the sum is 57.

The spelling of 82642736221806 in words is "eighty-two trillion, six hundred forty-two billion, seven hundred thirty-six million, two hundred twenty-one thousand, eight hundred six".