82665438768107 has 16 divisors (see below), whose sum is σ = 89109870503808. Its totient is φ = 76233247165440.

The previous prime is 82665438768097. The next prime is 82665438768163. The reversal of 82665438768107 is 70186783456628.

It is a cyclic number.

It is not a de Polignac number, because 82665438768107 - 2²² = 82665434573803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82665438768007) 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, 108328163 + ... + 109088595.

It is an arithmetic number, because the mean of its divisors is an integer number (5569366906488).

Almost surely, 2^{82665438768107} is an apocalyptic number.

82665438768107 is a deficient number, since it is larger than the sum of its proper divisors (6444431735701).

82665438768107 is a wasteful number, since it uses less digits than its factorization.

82665438768107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768470.

The product of its (nonzero) digits is 650280960, while the sum is 71.

The spelling of 82665438768107 in words is "eighty-two trillion, six hundred sixty-five billion, four hundred thirty-eight million, seven hundred sixty-eight thousand, one hundred seven".