6991441995 has 16 divisors (see below), whose sum is σ = 11424314880. Its totient is φ = 3649433184.

The previous prime is 6991441991. The next prime is 6991441999. The reversal of 6991441995 is 5991441996.

It is an interprime number because it is at equal distance from previous prime (6991441991) and next prime (6991441999).

It is not a de Polignac number, because 6991441995 - 2² = 6991441991 is a prime.

It is a super-2 number, since 2×6991441995² = 97760522338899160050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6991441991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4957765 + ... + 4959174.

It is an arithmetic number, because the mean of its divisors is an integer number (714019680).

Almost surely, 2^6991441995 is an apocalyptic number.

6991441995 is a deficient number, since it is larger than the sum of its proper divisors (4432872885).

6991441995 is a wasteful number, since it uses less digits than its factorization.

6991441995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9916994.

The product of its digits is 3149280, while the sum is 57.

The square root of 6991441995 is about 83614.8431500054. The cubic root of 6991441995 is about 1912.1512994063.

Subtracting from 6991441995 its reverse (5991441996), we obtain a palindrome (999999999).

The spelling of 6991441995 in words is "six billion, nine hundred ninety-one million, four hundred forty-one thousand, nine hundred ninety-five".