857128563071 has 16 divisors (see below), whose sum is σ = 958792412160. Its totient is φ = 759497565120.

The previous prime is 857128563041. The next prime is 857128563107. The reversal of 857128563071 is 170365821758.

It is a cyclic number.

It is not a de Polignac number, because 857128563071 - 2¹⁸ = 857128300927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857128563041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1664990 + ... + 2118123.

It is an arithmetic number, because the mean of its divisors is an integer number (59924525760).

Almost surely, 2^857128563071 is an apocalyptic number.

857128563071 is a deficient number, since it is larger than the sum of its proper divisors (101663849089).

857128563071 is a wasteful number, since it uses less digits than its factorization.

857128563071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3783646.

The product of its (nonzero) digits is 2822400, while the sum is 53.

The spelling of 857128563071 in words is "eight hundred fifty-seven billion, one hundred twenty-eight million, five hundred sixty-three thousand, seventy-one".