6544331413 has 2 divisors, whose sum is σ = 6544331414. Its totient is φ = 6544331412.

The previous prime is 6544331263. The next prime is 6544331447. The reversal of 6544331413 is 3141334456.

It is an a-pointer prime, because the next prime (6544331447) can be obtained adding 6544331413 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6276125284 + 268206129 = 79222^2 + 16377^2 .

It is a cyclic number.

It is not a de Polignac number, because 6544331413 - 2¹³ = 6544323221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6544337413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3272165706 + 3272165707.

It is an arithmetic number, because the mean of its divisors is an integer number (3272165707).

Almost surely, 2^6544331413 is an apocalyptic number.

It is an amenable number.

6544331413 is a deficient number, since it is larger than the sum of its proper divisors (1).

6544331413 is an equidigital number, since it uses as much as digits as its factorization.

6544331413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 34.

The square root of 6544331413 is about 80897.0420534645. The cubic root of 6544331413 is about 1870.4887255302.

Adding to 6544331413 its reverse (3141334456), we get a palindrome (9685665869).

The spelling of 6544331413 in words is "six billion, five hundred forty-four million, three hundred thirty-one thousand, four hundred thirteen".