857327874064 has 20 divisors (see below), whose sum is σ = 1661100776620. Its totient is φ = 428656705920.

The previous prime is 857327874043. The next prime is 857327874071. The reversal of 857327874064 is 460478723758.

It can be written as a sum of positive squares in 2 ways, for example, as 406941926400 + 450385947664 = 637920^2 + 671108^2 .

It is a super-2 number, since 2×857327874064² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 857327873993 and 857327874011.

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 3 ways as a sum of consecutive naturals, for example, 600442 + ... + 1440550.

It is an arithmetic number, because the mean of its divisors is an integer number (83055038831).

Almost surely, 2^857327874064 is an apocalyptic number.

It is an amenable number.

857327874064 is a deficient number, since it is larger than the sum of its proper divisors (803772902556).

857327874064 is a wasteful number, since it uses less digits than its factorization.

857327874064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903898 (or 903892 counting only the distinct ones).

The product of its (nonzero) digits is 63221760, while the sum is 61.

The spelling of 857327874064 in words is "eight hundred fifty-seven billion, three hundred twenty-seven million, eight hundred seventy-four thousand, sixty-four".