817349909896 has 32 divisors (see below), whose sum is σ = 1690672195800. Its totient is φ = 368037480960.

The previous prime is 817349909861. The next prime is 817349909897. The reversal of 817349909896 is 698909943718.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 317967420996 + 499382488900 = 563886^2 + 706670^2 .

It is not an unprimeable number, because it can be changed into a prime (817349909897) 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 7 ways as a sum of consecutive naturals, for example, 95838831 + ... + 95847358.

Almost surely, 2^817349909896 is an apocalyptic number.

It is an amenable number.

817349909896 is an abundant number, since it is smaller than the sum of its proper divisors (873322285904).

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

817349909896 is a wasteful number, since it uses less digits than its factorization.

817349909896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191686249 (or 191686245 counting only the distinct ones).

The product of its (nonzero) digits is 211631616, while the sum is 73.

The spelling of 817349909896 in words is "eight hundred seventeen billion, three hundred forty-nine million, nine hundred nine thousand, eight hundred ninety-six".