82818834865 has 8 divisors (see below), whose sum is σ = 107027417448. Its totient is φ = 61158524160.

The previous prime is 82818834853. The next prime is 82818834877. The reversal of 82818834865 is 56843881828.

It is an interprime number because it is at equal distance from previous prime (82818834853) and next prime (82818834877).

It can be written as a sum of positive squares in 4 ways, for example, as 4185701809 + 78633133056 = 64697^2 + 280416^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-82818834865 is a prime.

It is a super-2 number, since 2×82818834865² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 637067896 + ... + 637068025.

It is an arithmetic number, because the mean of its divisors is an integer number (13378427181).

Almost surely, 2^82818834865 is an apocalyptic number.

It is an amenable number.

82818834865 is a deficient number, since it is larger than the sum of its proper divisors (24208582583).

82818834865 is a wasteful number, since it uses less digits than its factorization.

82818834865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274135939.

The product of its digits is 23592960, while the sum is 61.

The spelling of 82818834865 in words is "eighty-two billion, eight hundred eighteen million, eight hundred thirty-four thousand, eight hundred sixty-five".