6997971133 has 2 divisors, whose sum is σ = 6997971134. Its totient is φ = 6997971132.

The previous prime is 6997971119. The next prime is 6997971139. The reversal of 6997971133 is 3311797996.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6823255609 + 174715524 = 82603^2 + 13218^2 .

It is a cyclic number.

It is not a de Polignac number, because 6997971133 - 2⁹ = 6997970621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6997971139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3498985566 + 3498985567.

It is an arithmetic number, because the mean of its divisors is an integer number (3498985567).

Almost surely, 2^6997971133 is an apocalyptic number.

It is an amenable number.

6997971133 is a deficient number, since it is larger than the sum of its proper divisors (1).

6997971133 is an equidigital number, since it uses as much as digits as its factorization.

6997971133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1928934, while the sum is 55.

The square root of 6997971133 is about 83653.8769753082. The cubic root of 6997971133 is about 1912.7463514404.

The spelling of 6997971133 in words is "six billion, nine hundred ninety-seven million, nine hundred seventy-one thousand, one hundred thirty-three".