6991846911 has 32 divisors (see below), whose sum is σ = 11846515200. Its totient is φ = 3992483520.

The previous prime is 6991846909. The next prime is 6991846931. The reversal of 6991846911 is 1196481996.

It is not a de Polignac number, because 6991846911 - 2¹ = 6991846909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6991846931) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 267420 + ... + 292398.

It is an arithmetic number, because the mean of its divisors is an integer number (370203600).

Almost surely, 2^6991846911 is an apocalyptic number.

6991846911 is a deficient number, since it is larger than the sum of its proper divisors (4854668289).

6991846911 is a wasteful number, since it uses less digits than its factorization.

6991846911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26476 (or 26470 counting only the distinct ones).

The product of its digits is 839808, while the sum is 54.

The square root of 6991846911 is about 83617.2644314558. The cubic root of 6991846911 is about 1912.1882133796.

The spelling of 6991846911 in words is "six billion, nine hundred ninety-one million, eight hundred forty-six thousand, nine hundred eleven".