82184219865 has 64 divisors (see below), whose sum is σ = 159546931200. Its totient is φ = 39807057600.

The previous prime is 82184219851. The next prime is 82184219869. The reversal of 82184219865 is 56891248128.

It is not a de Polignac number, because 82184219865 - 2⁶ = 82184219801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82184219869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1486060 + ... + 1540370.

It is an arithmetic number, because the mean of its divisors is an integer number (2492920800).

Almost surely, 2^82184219865 is an apocalyptic number.

It is an amenable number.

82184219865 is a deficient number, since it is larger than the sum of its proper divisors (77362711335).

82184219865 is a wasteful number, since it uses less digits than its factorization.

82184219865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55355 (or 55349 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 54.

The spelling of 82184219865 in words is "eighty-two billion, one hundred eighty-four million, two hundred nineteen thousand, eight hundred sixty-five".