849571171385 has 16 divisors (see below), whose sum is σ = 1020684226176. Its totient is φ = 678858204288.

The previous prime is 849571171381. The next prime is 849571171409. The reversal of 849571171385 is 583171175948.

849571171385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 849571171385 - 2² = 849571171381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (849571171381) 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, 14973029 + ... + 15029661.

It is an arithmetic number, because the mean of its divisors is an integer number (63792764136).

Almost surely, 2^849571171385 is an apocalyptic number.

It is an amenable number.

849571171385 is a deficient number, since it is larger than the sum of its proper divisors (171113054791).

849571171385 is a wasteful number, since it uses less digits than its factorization.

849571171385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60112.

The product of its digits is 8467200, while the sum is 59.

The spelling of 849571171385 in words is "eight hundred forty-nine billion, five hundred seventy-one million, one hundred seventy-one thousand, three hundred eighty-five".