6648755076349 has 2 divisors, whose sum is σ = 6648755076350. Its totient is φ = 6648755076348.

The previous prime is 6648755076289. The next prime is 6648755076367. The reversal of 6648755076349 is 9436705578466.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6648755076324 + 25 = 2578518^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 6648755076349 - 2¹⁹ = 6648754552061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6648755076389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3324377538174 + 3324377538175.

It is an arithmetic number, because the mean of its divisors is an integer number (3324377538175).

Almost surely, 2^{6648755076349} is an apocalyptic number.

It is an amenable number.

6648755076349 is a deficient number, since it is larger than the sum of its proper divisors (1).

6648755076349 is an equidigital number, since it uses as much as digits as its factorization.

6648755076349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 914457600, while the sum is 70.

The spelling of 6648755076349 in words is "six trillion, six hundred forty-eight billion, seven hundred fifty-five million, seventy-six thousand, three hundred forty-nine".