82168222499 has 24 divisors (see below), whose sum is σ = 95159291136. Its totient is φ = 70756686000.

The previous prime is 82168222481. The next prime is 82168222519. The reversal of 82168222499 is 99422286128.

It is a Cunningham number, because it is equal to 286650²-1.

It is not a de Polignac number, because 82168222499 - 2²⁰ = 82167173923 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 82168222499.

It is not an unprimeable number, because it can be changed into a prime (82168222459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143324 + ... + 429974.

It is an arithmetic number, because the mean of its divisors is an integer number (3964970464).

Almost surely, 2^82168222499 is an apocalyptic number.

82168222499 is a deficient number, since it is larger than the sum of its proper divisors (12991068637).

82168222499 is a wasteful number, since it uses less digits than its factorization.

82168222499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286799 (or 286788 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 53.

The spelling of 82168222499 in words is "eighty-two billion, one hundred sixty-eight million, two hundred twenty-two thousand, four hundred ninety-nine".