806387171745 has 64 divisors (see below), whose sum is σ = 1383086960640. Its totient is φ = 400144935168.

The previous prime is 806387171683. The next prime is 806387171747. The reversal of 806387171745 is 547171783608.

It is not a de Polignac number, because 806387171745 - 2¹¹ = 806387169697 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (806387171747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 64571892 + ... + 64584378.

It is an arithmetic number, because the mean of its divisors is an integer number (21610733760).

Almost surely, 2^806387171745 is an apocalyptic number.

It is an amenable number.

806387171745 is a deficient number, since it is larger than the sum of its proper divisors (576699788895).

806387171745 is a wasteful number, since it uses less digits than its factorization.

806387171745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17614.

The product of its (nonzero) digits is 7902720, while the sum is 57.

The spelling of 806387171745 in words is "eight hundred six billion, three hundred eighty-seven million, one hundred seventy-one thousand, seven hundred forty-five".