6997443191 has 8 divisors (see below), whose sum is σ = 7171997184. Its totient is φ = 6823426680.

The previous prime is 6997443181. The next prime is 6997443199. The reversal of 6997443191 is 1913447996.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6997443191 is a prime.

It is a super-2 number, since 2×6997443191² = 97928422422544524962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6997443199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107945 + ... + 160146.

It is an arithmetic number, because the mean of its divisors is an integer number (896499648).

Almost surely, 2^6997443191 is an apocalyptic number.

6997443191 is a deficient number, since it is larger than the sum of its proper divisors (174553993).

6997443191 is a wasteful number, since it uses less digits than its factorization.

6997443191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268741.

The product of its digits is 1469664, while the sum is 53.

The square root of 6997443191 is about 83650.7214015516. The cubic root of 6997443191 is about 1912.6982496639.

The spelling of 6997443191 in words is "six billion, nine hundred ninety-seven million, four hundred forty-three thousand, one hundred ninety-one".