82309586491 has 4 divisors (see below), whose sum is σ = 89792276184. Its totient is φ = 74826896800.

The previous prime is 82309586423. The next prime is 82309586539. The reversal of 82309586491 is 19468590328.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82309586491 - 2¹¹ = 82309584443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82309581491) by changing a digit.

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, 3741344830 + ... + 3741344851.

It is an arithmetic number, because the mean of its divisors is an integer number (22448069046).

Almost surely, 2^82309586491 is an apocalyptic number.

82309586491 is a deficient number, since it is larger than the sum of its proper divisors (7482689693).

82309586491 is a wasteful number, since it uses less digits than its factorization.

82309586491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7482689692.

The product of its (nonzero) digits is 3732480, while the sum is 55.

The spelling of 82309586491 in words is "eighty-two billion, three hundred nine million, five hundred eighty-six thousand, four hundred ninety-one".