82719344489 has 4 divisors (see below), whose sum is σ = 82724889924. Its totient is φ = 82713799056.

The previous prime is 82719344441. The next prime is 82719344507. The reversal of 82719344489 is 98444391728.

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 6546104464 + 76173240025 = 80908^2 + 275995^2 .

It is a cyclic number.

It is not a de Polignac number, because 82719344489 - 2¹⁶ = 82719278953 is a prime.

It is a super-2 number, since 2×82719344489² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82719344089) 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, 2750282 + ... + 2780195.

It is an arithmetic number, because the mean of its divisors is an integer number (20681222481).

Almost surely, 2^82719344489 is an apocalyptic number.

It is an amenable number.

82719344489 is a deficient number, since it is larger than the sum of its proper divisors (5545435).

82719344489 is a wasteful number, since it uses less digits than its factorization.

82719344489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5545434.

The product of its digits is 13934592, while the sum is 59.

The spelling of 82719344489 in words is "eighty-two billion, seven hundred nineteen million, three hundred forty-four thousand, four hundred eighty-nine".