82517720573 has 8 divisors (see below), whose sum is σ = 82680748800. Its totient is φ = 82354786128.

The previous prime is 82517720569. The next prime is 82517720587. The reversal of 82517720573 is 37502771528.

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

It is a cyclic number.

It is not a de Polignac number, because 82517720573 - 2² = 82517720569 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 (82517720773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1890368 + ... + 1933526.

It is an arithmetic number, because the mean of its divisors is an integer number (10335093600).

Almost surely, 2^82517720573 is an apocalyptic number.

It is an amenable number.

82517720573 is a deficient number, since it is larger than the sum of its proper divisors (163028227).

82517720573 is a wasteful number, since it uses less digits than its factorization.

82517720573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46891.

The product of its (nonzero) digits is 823200, while the sum is 47.

The spelling of 82517720573 in words is "eighty-two billion, five hundred seventeen million, seven hundred twenty thousand, five hundred seventy-three".