849666670063 has 4 divisors (see below), whose sum is σ = 850475107528. Its totient is φ = 848858232600.

The previous prime is 849666670057. The next prime is 849666670093. The reversal of 849666670063 is 360076666948.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 849666670063 - 2²⁹ = 849129799151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 849666669983 and 849666670010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849666670033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404217156 + ... + 404219257.

It is an arithmetic number, because the mean of its divisors is an integer number (212618776882).

Almost surely, 2^849666670063 is an apocalyptic number.

849666670063 is a deficient number, since it is larger than the sum of its proper divisors (808437465).

849666670063 is a wasteful number, since it uses less digits than its factorization.

849666670063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808437464.

The product of its (nonzero) digits is 47029248, while the sum is 61.

The spelling of 849666670063 in words is "eight hundred forty-nine billion, six hundred sixty-six million, six hundred seventy thousand, sixty-three".