850973692717 has 4 divisors (see below), whose sum is σ = 853117203676. Its totient is φ = 848830181760.

The previous prime is 850973692661. The next prime is 850973692727. The reversal of 850973692717 is 717296379058.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 215858735236 + 635114957481 = 464606^2 + 796941^2 .

It is a cyclic number.

It is not a de Polignac number, because 850973692717 - 2⁷ = 850973692589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850973692727) 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 3 ways as a sum of consecutive naturals, for example, 1071754884 + ... + 1071755677.

It is an arithmetic number, because the mean of its divisors is an integer number (213279300919).

Almost surely, 2^850973692717 is an apocalyptic number.

It is an amenable number.

850973692717 is a deficient number, since it is larger than the sum of its proper divisors (2143510959).

850973692717 is a wasteful number, since it uses less digits than its factorization.

850973692717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143510958.

The product of its (nonzero) digits is 40007520, while the sum is 64.

The spelling of 850973692717 in words is "eight hundred fifty billion, nine hundred seventy-three million, six hundred ninety-two thousand, seven hundred seventeen".