82565808133266 has 12 divisors (see below), whose sum is σ = 178892584288782. Its totient is φ = 27521936044416.

The previous prime is 82565808133243. The next prime is 82565808133271. The reversal of 82565808133266 is 66233180856528.

82565808133266 is a `hidden beast` number, since 8 + 2 + 5 + 6 + 580 + 8 + 13 + 32 + 6 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 62555207364225 + 20010600769041 = 7909185^2 + 4473321^2 .

It is a super-2 number, since 2×82565808133266² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2293494670351 + ... + 2293494670386.

Almost surely, 2^{82565808133266} is an apocalyptic number.

82565808133266 is an abundant number, since it is smaller than the sum of its proper divisors (96326776155516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82565808133266 is a wasteful number, since it uses less digits than its factorization.

82565808133266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4586989340745 (or 4586989340742 counting only the distinct ones).

The product of its (nonzero) digits is 99532800, while the sum is 63.

The spelling of 82565808133266 in words is "eighty-two trillion, five hundred sixty-five billion, eight hundred eight million, one hundred thirty-three thousand, two hundred sixty-six".