651544660606009 has 2 divisors, whose sum is σ = 651544660606010. Its totient is φ = 651544660606008.

The previous prime is 651544660605991. The next prime is 651544660606027. The reversal of 651544660606009 is 900606066445156.

It is a balanced prime because it is at equal distance from previous prime (651544660605991) and next prime (651544660606027).

It can be written as a sum of positive squares in only one way, i.e., 645364638624784 + 6180021981225 = 25404028^2 + 2485965^2 .

It is a cyclic number.

It is not a de Polignac number, because 651544660606009 - 2⁹ = 651544660605497 is a prime.

It is a super-2 number, since 2×651544660606009² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (651544660606109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325772330303004 + 325772330303005.

It is an arithmetic number, because the mean of its divisors is an integer number (325772330303005).

Almost surely, 2^{651544660606009} is an apocalyptic number.

It is an amenable number.

651544660606009 is a deficient number, since it is larger than the sum of its proper divisors (1).

651544660606009 is an equidigital number, since it uses as much as digits as its factorization.

651544660606009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27993600, while the sum is 58.

The spelling of 651544660606009 in words is "six hundred fifty-one trillion, five hundred forty-four billion, six hundred sixty million, six hundred six thousand, nine".