82061805533 has 8 divisors (see below), whose sum is σ = 82402583160. Its totient is φ = 81721543680.

The previous prime is 82061805503. The next prime is 82061805541. The reversal of 82061805533 is 33550816028.

It can be written as a sum of positive squares in 4 ways, for example, as 5118257764 + 76943547769 = 71542^2 + 277387^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82061805533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82061805503) 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, 191573 + ... + 448133.

It is an arithmetic number, because the mean of its divisors is an integer number (10300322895).

Almost surely, 2^82061805533 is an apocalyptic number.

It is an amenable number.

82061805533 is a deficient number, since it is larger than the sum of its proper divisors (340777627).

82061805533 is a wasteful number, since it uses less digits than its factorization.

82061805533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257887.

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 82061805533 in words is "eighty-two billion, sixty-one million, eight hundred five thousand, five hundred thirty-three".