8216665313886 has 24 divisors (see below), whose sum is σ = 18849996897264. Its totient is φ = 2577777353280.

The previous prime is 8216665313881. The next prime is 8216665313897. The reversal of 8216665313886 is 6883135666128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8216665313881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13425923410 + ... + 13425924021.

It is an arithmetic number, because the mean of its divisors is an integer number (785416537386).

Almost surely, 2^{8216665313886} is an apocalyptic number.

8216665313886 is an abundant number, since it is smaller than the sum of its proper divisors (10633331583378).

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

8216665313886 is a wasteful number, since it uses less digits than its factorization.

8216665313886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26851847456 (or 26851847453 counting only the distinct ones).

The product of its digits is 59719680, while the sum is 63.

The spelling of 8216665313886 in words is "eight trillion, two hundred sixteen billion, six hundred sixty-five million, three hundred thirteen thousand, eight hundred eighty-six".