7718672436049 has 2 divisors, whose sum is σ = 7718672436050. Its totient is φ = 7718672436048.

The previous prime is 7718672436047. The next prime is 7718672436073. The reversal of 7718672436049 is 9406342768177.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5663176746049 + 2055495690000 = 2379743^2 + 1433700^2 .

It is a cyclic number.

It is not a de Polignac number, because 7718672436049 - 2¹ = 7718672436047 is a prime.

Together with 7718672436047, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (7718672436047) 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, 3859336218024 + 3859336218025.

It is an arithmetic number, because the mean of its divisors is an integer number (3859336218025).

Almost surely, 2^{7718672436049} is an apocalyptic number.

It is an amenable number.

7718672436049 is a deficient number, since it is larger than the sum of its proper divisors (1).

7718672436049 is an equidigital number, since it uses as much as digits as its factorization.

7718672436049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 85349376, while the sum is 64.

The spelling of 7718672436049 in words is "seven trillion, seven hundred eighteen billion, six hundred seventy-two million, four hundred thirty-six thousand, forty-nine".