9811215585796 has 9 divisors (see below), whose sum is σ = 17169638238151. Its totient is φ = 4905604660612.

The previous prime is 9811215585739. The next prime is 9811215585827. The reversal of 9811215585796 is 6975855121189.

The square root of 9811215585796 is 3132286.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5481501 + ... + 7047643.

Almost surely, 2^{9811215585796} is an apocalyptic number.

9811215585796 is the 3132286-th square number.

It is an amenable number.

9811215585796 is a deficient number, since it is larger than the sum of its proper divisors (7358422652355).

9811215585796 is an frugal number, since it uses more digits than its factorization.

9811215585796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3132290 (or 1566145 counting only the distinct ones).

The product of its digits is 54432000, while the sum is 67.

The spelling of 9811215585796 in words is "nine trillion, eight hundred eleven billion, two hundred fifteen million, five hundred eighty-five thousand, seven hundred ninety-six".