6491016013 has 2 divisors, whose sum is σ = 6491016014. Its totient is φ = 6491016012.

The previous prime is 6491015989. The next prime is 6491016043. The reversal of 6491016013 is 3106101946.

6491016013 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6387526084 + 103489929 = 79922^2 + 10173^2 .

It is a cyclic number.

It is not a de Polignac number, because 6491016013 - 2⁹ = 6491015501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6491016043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3245508006 + 3245508007.

It is an arithmetic number, because the mean of its divisors is an integer number (3245508007).

Almost surely, 2^6491016013 is an apocalyptic number.

It is an amenable number.

6491016013 is a deficient number, since it is larger than the sum of its proper divisors (1).

6491016013 is an equidigital number, since it uses as much as digits as its factorization.

6491016013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 6491016013 is about 80566.8418954100. The cubic root of 6491016013 is about 1865.3953657743.

Adding to 6491016013 its reverse (3106101946), we get a palindrome (9597117959).

The spelling of 6491016013 in words is "six billion, four hundred ninety-one million, sixteen thousand, thirteen".