6551065009 has 2 divisors, whose sum is σ = 6551065010. Its totient is φ = 6551065008.

The previous prime is 6551064973. The next prime is 6551065057. The reversal of 6551065009 is 9005601556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3309470784 + 3241594225 = 57528^2 + 56935^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6551065009 is a prime.

It is not a weakly prime, because it can be changed into another prime (6551065069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3275532504 + 3275532505.

It is an arithmetic number, because the mean of its divisors is an integer number (3275532505).

Almost surely, 2^6551065009 is an apocalyptic number.

It is an amenable number.

6551065009 is a deficient number, since it is larger than the sum of its proper divisors (1).

6551065009 is an equidigital number, since it uses as much as digits as its factorization.

6551065009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40500, while the sum is 37.

The square root of 6551065009 is about 80938.6496613330. The cubic root of 6551065009 is about 1871.1300336223.

The spelling of 6551065009 in words is "six billion, five hundred fifty-one million, sixty-five thousand, nine".