82357831009 has 4 divisors (see below), whose sum is σ = 82784555716. Its totient is φ = 81931106304.

The previous prime is 82357831007. The next prime is 82357831013. The reversal of 82357831009 is 90013875328.

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

It can be written as a sum of positive squares in 2 ways, for example, as 34133671009 + 48224160000 = 184753^2 + 219600^2 .

It is a cyclic number.

It is not a de Polignac number, because 82357831009 - 2¹ = 82357831007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82357831009.

It is not an unprimeable number, because it can be changed into a prime (82357831001) 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, 213362064 + ... + 213362449.

It is an arithmetic number, because the mean of its divisors is an integer number (20696138929).

Almost surely, 2^82357831009 is an apocalyptic number.

It is an amenable number.

82357831009 is a deficient number, since it is larger than the sum of its proper divisors (426724707).

82357831009 is a wasteful number, since it uses less digits than its factorization.

82357831009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426724706.

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 82357831009 in words is "eighty-two billion, three hundred fifty-seven million, eight hundred thirty-one thousand, nine".