82665656628 has 24 divisors (see below), whose sum is σ = 204232799232. Its totient is φ = 25934323584.

The previous prime is 82665656617. The next prime is 82665656641.

82665656628 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×82665656628² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202611700 + ... + 202612107.

It is an arithmetic number, because the mean of its divisors is an integer number (8509699968).

Almost surely, 2^82665656628 is an apocalyptic number.

It is an amenable number.

82665656628 is an abundant number, since it is smaller than the sum of its proper divisors (121567142604).

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

82665656628 is a wasteful number, since it uses less digits than its factorization.

82665656628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405223831 (or 405223829 counting only the distinct ones).

The product of its digits is 49766400, while the sum is 60.

The spelling of 82665656628 in words is "eighty-two billion, six hundred sixty-five million, six hundred fifty-six thousand, six hundred twenty-eight".