854829648817 has 8 divisors (see below), whose sum is σ = 855937824840. Its totient is φ = 853721917440.

The previous prime is 854829648809. The next prime is 854829648821. The reversal of 854829648817 is 718846928458.

854829648817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 87972153201 + 766857495616 = 296601^2 + 875704^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 854829648817 - 2³ = 854829648809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (854829648917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3826317 + ... + 4043557.

It is an arithmetic number, because the mean of its divisors is an integer number (106992228105).

Almost surely, 2^854829648817 is an apocalyptic number.

It is an amenable number.

854829648817 is a deficient number, since it is larger than the sum of its proper divisors (1108176023).

854829648817 is a wasteful number, since it uses less digits than its factorization.

854829648817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222323.

The product of its digits is 247726080, while the sum is 70.

The spelling of 854829648817 in words is "eight hundred fifty-four billion, eight hundred twenty-nine million, six hundred forty-eight thousand, eight hundred seventeen".