850520982571 has 16 divisors (see below), whose sum is σ = 940804653600. Its totient is φ = 763793273088.

The previous prime is 850520982539. The next prime is 850520982581. The reversal of 850520982571 is 175289025058.

It is a cyclic number.

It is not a de Polignac number, because 850520982571 - 2⁵ = 850520982539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (850520982511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4495575 + ... + 4680943.

It is an arithmetic number, because the mean of its divisors is an integer number (58800290850).

Almost surely, 2^850520982571 is an apocalyptic number.

850520982571 is a deficient number, since it is larger than the sum of its proper divisors (90283671029).

850520982571 is a wasteful number, since it uses less digits than its factorization.

850520982571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194958.

The product of its (nonzero) digits is 2016000, while the sum is 52.

The spelling of 850520982571 in words is "eight hundred fifty billion, five hundred twenty million, nine hundred eighty-two thousand, five hundred seventy-one".