82505530491 has 8 divisors (see below), whose sum is σ = 110396093760. Its totient is φ = 54809327112.

The previous prime is 82505530477. The next prime is 82505530529. The reversal of 82505530491 is 19403550528.

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

It is not a de Polignac number, because 82505530491 - 2⁶ = 82505530427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82505531491) 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, 48588981 + ... + 48590678.

It is an arithmetic number, because the mean of its divisors is an integer number (13799511720).

Almost surely, 2^82505530491 is an apocalyptic number.

82505530491 is a deficient number, since it is larger than the sum of its proper divisors (27890563269).

82505530491 is a wasteful number, since it uses less digits than its factorization.

82505530491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97179945.

The product of its (nonzero) digits is 216000, while the sum is 42.

The spelling of 82505530491 in words is "eighty-two billion, five hundred five million, five hundred thirty thousand, four hundred ninety-one".