6747120509 has 2 divisors, whose sum is σ = 6747120510. Its totient is φ = 6747120508.

The previous prime is 6747120469. The next prime is 6747120511. The reversal of 6747120509 is 9050217476.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3922516900 + 2824603609 = 62630^2 + 53147^2 .

It is a cyclic number.

It is not a de Polignac number, because 6747120509 - 2¹² = 6747116413 is a prime.

It is a super-3 number, since 3×6747120509³ (a number of 30 digits) contains 333 as substring.

Together with 6747120511, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6747120539) 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, 3373560254 + 3373560255.

It is an arithmetic number, because the mean of its divisors is an integer number (3373560255).

Almost surely, 2^6747120509 is an apocalyptic number.

It is an amenable number.

6747120509 is a deficient number, since it is larger than the sum of its proper divisors (1).

6747120509 is an equidigital number, since it uses as much as digits as its factorization.

6747120509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 6747120509 is about 82140.8577323125. The cubic root of 6747120509 is about 1889.6128009662.

The spelling of 6747120509 in words is "six billion, seven hundred forty-seven million, one hundred twenty thousand, five hundred nine".