6991190011 has 16 divisors (see below), whose sum is σ = 7928928000. Its totient is φ = 6110905248.

The previous prime is 6991189951. The next prime is 6991190023. The reversal of 6991190011 is 1100911996.

It is not a de Polignac number, because 6991190011 - 2¹⁷ = 6991058939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6991290011) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 661410 + ... + 671896.

It is an arithmetic number, because the mean of its divisors is an integer number (495558000).

Almost surely, 2^6991190011 is an apocalyptic number.

6991190011 is a deficient number, since it is larger than the sum of its proper divisors (937737989).

6991190011 is a wasteful number, since it uses less digits than its factorization.

6991190011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13218.

The product of its (nonzero) digits is 4374, while the sum is 37.

The square root of 6991190011 is about 83613.3363226226. The cubic root of 6991190011 is about 1912.1283266862.

The spelling of 6991190011 in words is "six billion, nine hundred ninety-one million, one hundred ninety thousand, eleven".