990716960999809 has 16 divisors (see below), whose sum is σ = 1015697522309184. Its totient is φ = 965970397454400.

The previous prime is 990716960999807. The next prime is 990716960999833. The reversal of 990716960999809 is 908999069617099.

It is a cyclic number.

It is not a de Polignac number, because 990716960999809 - 2¹ = 990716960999807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990716960999807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86996179 + ... + 97722919.

It is an arithmetic number, because the mean of its divisors is an integer number (63481095144324).

Almost surely, 2^{990716960999809} is an apocalyptic number.

It is an amenable number.

990716960999809 is a deficient number, since it is larger than the sum of its proper divisors (24980561309375).

990716960999809 is a wasteful number, since it uses less digits than its factorization.

990716960999809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10737648.

The product of its (nonzero) digits is 9642465504, while the sum is 91.

The spelling of 990716960999809 in words is "nine hundred ninety trillion, seven hundred sixteen billion, nine hundred sixty million, nine hundred ninety-nine thousand, eight hundred nine".