854705941729 has 4 divisors (see below), whose sum is σ = 859646438676. Its totient is φ = 849765444784.

The previous prime is 854705941721. The next prime is 854705941763. The reversal of 854705941729 is 927149507458.

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 738869180625 + 115836761104 = 859575^2 + 340348^2 .

It is a cyclic number.

It is not a de Polignac number, because 854705941729 - 2³ = 854705941721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (854705941721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2470248214 + ... + 2470248559.

It is an arithmetic number, because the mean of its divisors is an integer number (214911609669).

Almost surely, 2^854705941729 is an apocalyptic number.

It is an amenable number.

854705941729 is a deficient number, since it is larger than the sum of its proper divisors (4940496947).

854705941729 is a wasteful number, since it uses less digits than its factorization.

854705941729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4940496946.

The product of its (nonzero) digits is 25401600, while the sum is 61.

The spelling of 854705941729 in words is "eight hundred fifty-four billion, seven hundred five million, nine hundred forty-one thousand, seven hundred twenty-nine".