216876285886 has 32 divisors (see below), whose sum is σ = 351666100800. Its totient is φ = 99717729024.

The previous prime is 216876285881. The next prime is 216876285929. The reversal of 216876285886 is 688582678612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216876285881) 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, 40167015 + ... + 40172413.

It is an arithmetic number, because the mean of its divisors is an integer number (10989565650).

Almost surely, 2^216876285886 is an apocalyptic number.

216876285886 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

216876285886 is a deficient number, since it is larger than the sum of its proper divisors (134789814914).

216876285886 is a wasteful number, since it uses less digits than its factorization.

216876285886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10980.

The product of its digits is 123863040, while the sum is 67.

The spelling of 216876285886 in words is "two hundred sixteen billion, eight hundred seventy-six million, two hundred eighty-five thousand, eight hundred eighty-six".