851168133 has 6 divisors (see below), whose sum is σ = 1229465094. Its totient is φ = 567445416.

The previous prime is 851168119. The next prime is 851168221. The reversal of 851168133 is 331861158.

851168133 is a `hidden beast` number, since 8 + 511 + 6 + 8 + 133 = 666.

It can be written as a sum of positive squares in only one way, i.e., 656230689 + 194937444 = 25617^2 + 13962^2 .

It is not a de Polignac number, because 851168133 - 2⁶ = 851168069 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851168033) 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 5 ways as a sum of consecutive naturals, for example, 47287110 + ... + 47287127.

It is an arithmetic number, because the mean of its divisors is an integer number (204910849).

Almost surely, 2^851168133 is an apocalyptic number.

It is an amenable number.

851168133 is a deficient number, since it is larger than the sum of its proper divisors (378296961).

851168133 is a wasteful number, since it uses less digits than its factorization.

851168133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94574243 (or 94574240 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 851168133 is about 29174.7859118109. The cubic root of 851168133 is about 947.7019739624.

The spelling of 851168133 in words is "eight hundred fifty-one million, one hundred sixty-eight thousand, one hundred thirty-three".