82665626538277 has 16 divisors (see below), whose sum is σ = 89253290880000. Its totient is φ = 76321480457664.

The previous prime is 82665626538199. The next prime is 82665626538281. The reversal of 82665626538277 is 77283562656628.

It is a cyclic number.

It is not a de Polignac number, because 82665626538277 - 2²⁷ = 82665492320549 is a prime.

It is a super-2 number, since 2×82665626538277² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82665626538577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275323077 + ... + 275623162.

It is an arithmetic number, because the mean of its divisors is an integer number (5578330680000).

Almost surely, 2^{82665626538277} is an apocalyptic number.

It is an amenable number.

82665626538277 is a deficient number, since it is larger than the sum of its proper divisors (6587664341723).

82665626538277 is a wasteful number, since it uses less digits than its factorization.

82665626538277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550946460.

The product of its digits is 2438553600, while the sum is 73.

The spelling of 82665626538277 in words is "eighty-two trillion, six hundred sixty-five billion, six hundred twenty-six million, five hundred thirty-eight thousand, two hundred seventy-seven".