8991325334331 has 6 divisors (see below), whose sum is σ = 12987469927380. Its totient is φ = 5994216889548.

The previous prime is 8991325334317. The next prime is 8991325334389. The reversal of 8991325334331 is 1334335231998.

8991325334331 is a `hidden beast` number, since 8 + 9 + 9 + 1 + 32 + 533 + 43 + 31 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-8991325334331 is a prime.

It is a super-2 number, since 2×8991325334331² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8991325334311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 499518074121 + ... + 499518074138.

It is an arithmetic number, because the mean of its divisors is an integer number (2164578321230).

Almost surely, 2^{8991325334331} is an apocalyptic number.

8991325334331 is a deficient number, since it is larger than the sum of its proper divisors (3996144593049).

8991325334331 is a wasteful number, since it uses less digits than its factorization.

8991325334331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999036148265 (or 999036148262 counting only the distinct ones).

The product of its digits is 6298560, while the sum is 54.

The spelling of 8991325334331 in words is "eight trillion, nine hundred ninety-one billion, three hundred twenty-five million, three hundred thirty-four thousand, three hundred thirty-one".