82006660069 has 8 divisors (see below), whose sum is σ = 84970127520. Its totient is φ = 79095643536.

The previous prime is 82006660049. The next prime is 82006660079. The reversal of 82006660069 is 96006660028.

It is a happy number.

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 82006660069 - 2¹⁹ = 82006135781 is a prime.

It is a super-2 number, since 2×82006660069² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82006660049) 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, 13109547 + ... + 13115800.

It is an arithmetic number, because the mean of its divisors is an integer number (10621265940).

Almost surely, 2^82006660069 is an apocalyptic number.

It is an amenable number.

82006660069 is a deficient number, since it is larger than the sum of its proper divisors (2963467451).

82006660069 is a wasteful number, since it uses less digits than its factorization.

82006660069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26225459.

The product of its (nonzero) digits is 186624, while the sum is 43.

The spelling of 82006660069 in words is "eighty-two billion, six million, six hundred sixty thousand, sixty-nine".