82866663671 has 8 divisors (see below), whose sum is σ = 90609746688. Its totient is φ = 75158539000.

The previous prime is 82866663647. The next prime is 82866663703. The reversal of 82866663671 is 17636666828.

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

It is a cyclic number.

It is not a de Polignac number, because 82866663671 - 2²² = 82862469367 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82866663671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82866660671) 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, 8734625 + ... + 8744106.

It is an arithmetic number, because the mean of its divisors is an integer number (11326218336).

Almost surely, 2^82866663671 is an apocalyptic number.

82866663671 is a deficient number, since it is larger than the sum of its proper divisors (7743083017).

82866663671 is a wasteful number, since it uses less digits than its factorization.

82866663671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17479173.

The product of its digits is 20901888, while the sum is 59.

The spelling of 82866663671 in words is "eighty-two billion, eight hundred sixty-six million, six hundred sixty-three thousand, six hundred seventy-one".