6972521771 has 2 divisors, whose sum is σ = 6972521772. Its totient is φ = 6972521770.

The previous prime is 6972521747. The next prime is 6972521779. The reversal of 6972521771 is 1771252796.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6972521771 is a prime.

It is not a weakly prime, because it can be changed into another prime (6972521779) 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 as a sum of consecutive naturals, namely, 3486260885 + 3486260886.

It is an arithmetic number, because the mean of its divisors is an integer number (3486260886).

Almost surely, 2^6972521771 is an apocalyptic number.

6972521771 is a deficient number, since it is larger than the sum of its proper divisors (1).

6972521771 is an equidigital number, since it uses as much as digits as its factorization.

6972521771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 370440, while the sum is 47.

The square root of 6972521771 is about 83501.6273553995. The cubic root of 6972521771 is about 1910.4248546412.

The spelling of 6972521771 in words is "six billion, nine hundred seventy-two million, five hundred twenty-one thousand, seven hundred seventy-one".