816989824463 has 16 divisors (see below), whose sum is σ = 836587591872. Its totient is φ = 797623200000.

The previous prime is 816989824457. The next prime is 816989824501. The reversal of 816989824463 is 364428989618.

It is a cyclic number.

It is not a de Polignac number, because 816989824463 - 2⁴ = 816989824447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 816989824393 and 816989824402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816989824433) 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 15 ways as a sum of consecutive naturals, for example, 36492533 + ... + 36514913.

It is an arithmetic number, because the mean of its divisors is an integer number (52286724492).

Almost surely, 2^816989824463 is an apocalyptic number.

816989824463 is a deficient number, since it is larger than the sum of its proper divisors (19597767409).

816989824463 is a wasteful number, since it uses less digits than its factorization.

816989824463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27506.

The product of its digits is 143327232, while the sum is 68.

The spelling of 816989824463 in words is "eight hundred sixteen billion, nine hundred eighty-nine million, eight hundred twenty-four thousand, four hundred sixty-three".