82068691572 has 72 divisors (see below), whose sum is σ = 237440106176. Its totient is φ = 23413307904.

The previous prime is 82068691559. The next prime is 82068691631. The reversal of 82068691572 is 27519686028.

82068691572 is a `hidden beast` number, since 8 + 2 + 0 + 6 + 8 + 69 + 1 + 572 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72358 + ... + 411549.

Almost surely, 2^82068691572 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82068691572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118720053088).

82068691572 is an abundant number, since it is smaller than the sum of its proper divisors (155371414604).

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

82068691572 is a wasteful number, since it uses less digits than its factorization.

82068691572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484597 (or 484592 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 82068691572 in words is "eighty-two billion, sixty-eight million, six hundred ninety-one thousand, five hundred seventy-two".