857063071844 has 24 divisors (see below), whose sum is σ = 1714153878528. Its totient is φ = 367306801920.

The previous prime is 857063071817. The next prime is 857063071853. The reversal of 857063071844 is 448170360758.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1815284 + ... + 2238164.

It is an arithmetic number, because the mean of its divisors is an integer number (71423078272).

Almost surely, 2^857063071844 is an apocalyptic number.

It is an amenable number.

857063071844 is an abundant number, since it is smaller than the sum of its proper divisors (857090806684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

857063071844 is a wasteful number, since it uses less digits than its factorization.

857063071844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495275 (or 495273 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 53.

The spelling of 857063071844 in words is "eight hundred fifty-seven billion, sixty-three million, seventy-one thousand, eight hundred forty-four".