82665416328617 has 4 divisors (see below), whose sum is σ = 84225141165060. Its totient is φ = 81105691492176.

The previous prime is 82665416328503. The next prime is 82665416328637. The reversal of 82665416328617 is 71682361456628.

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 51214361529241 + 31451054799376 = 7156421^2 + 5608124^2 .

It is a cyclic number.

It is not a de Polignac number, because 82665416328617 - 2²² = 82665412134313 is a prime.

It is a super-3 number, since 3×82665416328617³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82665416328637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 779862418142 + ... + 779862418247.

It is an arithmetic number, because the mean of its divisors is an integer number (21056285291265).

Almost surely, 2^{82665416328617} is an apocalyptic number.

It is an amenable number.

82665416328617 is a deficient number, since it is larger than the sum of its proper divisors (1559724836443).

82665416328617 is a wasteful number, since it uses less digits than its factorization.

82665416328617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1559724836442.

The product of its digits is 139345920, while the sum is 65.

The spelling of 82665416328617 in words is "eighty-two trillion, six hundred sixty-five billion, four hundred sixteen million, three hundred twenty-eight thousand, six hundred seventeen".