816976816888 has 16 divisors (see below), whose sum is σ = 1532099560680. Its totient is φ = 408416934048.

The previous prime is 816976816883. The next prime is 816976816891. The reversal of 816976816888 is 888618679618.

It is a super-2 number, since 2×816976816888² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816976816883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8885706 + ... + 8977177.

Almost surely, 2^816976816888 is an apocalyptic number.

It is an amenable number.

816976816888 is a deficient number, since it is larger than the sum of its proper divisors (715122743792).

816976816888 is a wasteful number, since it uses less digits than its factorization.

816976816888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17868606 (or 17868602 counting only the distinct ones).

The product of its digits is 445906944, while the sum is 76.

The spelling of 816976816888 in words is "eight hundred sixteen billion, nine hundred seventy-six million, eight hundred sixteen thousand, eight hundred eighty-eight".