82665180037805 has 16 divisors (see below), whose sum is σ = 99289239329280. Its totient is φ = 66071481997248.

The previous prime is 82665180037793. The next prime is 82665180037819. The reversal of 82665180037805 is 50873008156628.

It is a cyclic number.

It is not a de Polignac number, because 82665180037805 - 2⁴ = 82665180037789 is a prime.

It is a super-2 number, since 2×82665180037805² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31631684 + ... + 34145186.

It is an arithmetic number, because the mean of its divisors is an integer number (6205577458080).

Almost surely, 2^{82665180037805} is an apocalyptic number.

It is an amenable number.

82665180037805 is a deficient number, since it is larger than the sum of its proper divisors (16624059291475).

82665180037805 is a wasteful number, since it uses less digits than its factorization.

82665180037805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2519540.

The product of its (nonzero) digits is 19353600, while the sum is 59.

The spelling of 82665180037805 in words is "eighty-two trillion, six hundred sixty-five billion, one hundred eighty million, thirty-seven thousand, eight hundred five".