82665177011285 has 24 divisors (see below), whose sum is σ = 109037816373528. Its totient is φ = 60119155712000.

The previous prime is 82665177011213. The next prime is 82665177011309. The reversal of 82665177011285 is 58211077156628.

It can be written as a sum of positive squares in 4 ways, for example, as 3833764 + 82665173177521 = 1958^2 + 9092039^2 .

It is not a de Polignac number, because 82665177011285 - 2²⁶ = 82665109902421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37414385 + ... + 39562185.

It is an arithmetic number, because the mean of its divisors is an integer number (4543242348897).

Almost surely, 2^{82665177011285} is an apocalyptic number.

It is an amenable number.

82665177011285 is a deficient number, since it is larger than the sum of its proper divisors (26372639362243).

82665177011285 is a wasteful number, since it uses less digits than its factorization.

82665177011285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2211445 (or 2211434 counting only the distinct ones).

The product of its (nonzero) digits is 11289600, while the sum is 59.

The spelling of 82665177011285 in words is "eighty-two trillion, six hundred sixty-five billion, one hundred seventy-seven million, eleven thousand, two hundred eighty-five".