82066888688 has 20 divisors (see below), whose sum is σ = 159705064680. Its totient is φ = 40852678464.

The previous prime is 82066888661. The next prime is 82066888711. The reversal of 82066888688 is 88688866028.

It is a happy number.

It is a super-2 number, since 2×82066888688² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 11294123 + ... + 11301386.

It is an arithmetic number, because the mean of its divisors is an integer number (7985253234).

Almost surely, 2^82066888688 is an apocalyptic number.

It is an amenable number.

82066888688 is a deficient number, since it is larger than the sum of its proper divisors (77638175992).

82066888688 is a wasteful number, since it uses less digits than its factorization.

82066888688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22595744 (or 22595738 counting only the distinct ones).

The product of its (nonzero) digits is 113246208, while the sum is 68.

The spelling of 82066888688 in words is "eighty-two billion, sixty-six million, eight hundred eighty-eight thousand, six hundred eighty-eight".