82558228668 has 12 divisors (see below), whose sum is σ = 192635866920. Its totient is φ = 27519409552.

The previous prime is 82558228661. The next prime is 82558228693. The reversal of 82558228668 is 86682285528.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×82558228668² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82558228661) 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 3 ways as a sum of consecutive naturals, for example, 3439926183 + ... + 3439926206.

It is an arithmetic number, because the mean of its divisors is an integer number (16052988910).

Almost surely, 2^82558228668 is an apocalyptic number.

It is an amenable number.

82558228668 is an abundant number, since it is smaller than the sum of its proper divisors (110077638252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82558228668 is a wasteful number, since it uses less digits than its factorization.

82558228668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6879852396 (or 6879852394 counting only the distinct ones).

The product of its digits is 29491200, while the sum is 60.

The spelling of 82558228668 in words is "eighty-two billion, five hundred fifty-eight million, two hundred twenty-eight thousand, six hundred sixty-eight".