82645537686 has 8 divisors (see below), whose sum is σ = 165291075384. Its totient is φ = 27548512560.

The previous prime is 82645537673. The next prime is 82645537687. The reversal of 82645537686 is 68673554628.

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

82645537686 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82645537687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6887128135 + ... + 6887128146.

It is an arithmetic number, because the mean of its divisors is an integer number (20661384423).

Almost surely, 2^82645537686 is an apocalyptic number.

82645537686 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.

82645537686 is a wasteful number, since it uses less digits than its factorization.

82645537686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13774256286.

The product of its digits is 58060800, while the sum is 60.

The spelling of 82645537686 in words is "eighty-two billion, six hundred forty-five million, five hundred thirty-seven thousand, six hundred eighty-six".