82505706506 has 8 divisors (see below), whose sum is σ = 124180944804. Its totient is φ = 41112058240.

The previous prime is 82505706499. The next prime is 82505706511. The reversal of 82505706506 is 60560750528.

It can be written as a sum of positive squares in 2 ways, for example, as 67951455625 + 14554250881 = 260675^2 + 120641^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70396775 + ... + 70397946.

Almost surely, 2^82505706506 is an apocalyptic number.

82505706506 is a deficient number, since it is larger than the sum of its proper divisors (41675238298).

82505706506 is a wasteful number, since it uses less digits than its factorization.

82505706506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140795016.

The product of its (nonzero) digits is 504000, while the sum is 44.

The spelling of 82505706506 in words is "eighty-two billion, five hundred five million, seven hundred six thousand, five hundred six".