842873881866 has 16 divisors (see below), whose sum is σ = 1685782927488. Its totient is φ = 280952100000.

The previous prime is 842873881853. The next prime is 842873881867. The reversal of 842873881866 is 668188378248.

It is a self number, because there is not a number n which added to its sum of digits gives 842873881866.

It is not an unprimeable number, because it can be changed into a prime (842873881867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1148275 + ... + 1733286.

It is an arithmetic number, because the mean of its divisors is an integer number (105361432968).

Almost surely, 2^842873881866 is an apocalyptic number.

842873881866 is an abundant number, since it is smaller than the sum of its proper divisors (842909045622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

842873881866 is a wasteful number, since it uses less digits than its factorization.

842873881866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2930317.

The product of its digits is 198180864, while the sum is 69.

The spelling of 842873881866 in words is "eight hundred forty-two billion, eight hundred seventy-three million, eight hundred eighty-one thousand, eight hundred sixty-six".