7881332497 has 2 divisors, whose sum is σ = 7881332498. Its totient is φ = 7881332496.

The previous prime is 7881332477. The next prime is 7881332509. The reversal of 7881332497 is 7942331887.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7859886336 + 21446161 = 88656^2 + 4631^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7881332497 is a prime.

It is not a weakly prime, because it can be changed into another prime (7881332477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3940666248 + 3940666249.

It is an arithmetic number, because the mean of its divisors is an integer number (3940666249).

Almost surely, 2^7881332497 is an apocalyptic number.

It is an amenable number.

7881332497 is a deficient number, since it is larger than the sum of its proper divisors (1).

7881332497 is an equidigital number, since it uses as much as digits as its factorization.

7881332497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 52.

The square root of 7881332497 is about 88776.8691552028. The cubic root of 7881332497 is about 1990.0617386972.

The spelling of 7881332497 in words is "seven billion, eight hundred eighty-one million, three hundred thirty-two thousand, four hundred ninety-seven".