8390898821968 has 40 divisors (see below), whose sum is σ = 17583074564328. Its totient is φ = 3856101384192.

The previous prime is 8390898821891. The next prime is 8390898821971. The reversal of 8390898821968 is 8691288980938.

It can be written as a sum of positive squares in 4 ways, for example, as 907347692304 + 7483551129664 = 952548^2 + 2735608^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86519905 + ... + 86616832.

Almost surely, 2^{8390898821968} is an apocalyptic number.

It is an amenable number.

8390898821968 is an abundant number, since it is smaller than the sum of its proper divisors (9192175742360).

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

8390898821968 is a wasteful number, since it uses less digits than its factorization.

8390898821968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173136991 (or 173136985 counting only the distinct ones).

The product of its (nonzero) digits is 859963392, while the sum is 79.

The spelling of 8390898821968 in words is "eight trillion, three hundred ninety billion, eight hundred ninety-eight million, eight hundred twenty-one thousand, nine hundred sixty-eight".