82660219668 has 36 divisors (see below), whose sum is σ = 225019488148. Its totient is φ = 25433913600.

The previous prime is 82660219613. The next prime is 82660219727. The reversal of 82660219668 is 86691206628.

It is a happy number.

82660219668 is a `hidden beast` number, since 8 + 26 + 602 + 1 + 9 + 6 + 6 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10400328324 + 72259891344 = 101982^2 + 268812^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88311733 + ... + 88312668.

Almost surely, 2^82660219668 is an apocalyptic number.

It is an amenable number.

82660219668 is an abundant number, since it is smaller than the sum of its proper divisors (142359268480).

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

82660219668 is a wasteful number, since it uses less digits than its factorization.

82660219668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176624424 (or 176624419 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 82660219668 in words is "eighty-two billion, six hundred sixty million, two hundred nineteen thousand, six hundred sixty-eight".