6511650065077 has 2 divisors, whose sum is σ = 6511650065078. Its totient is φ = 6511650065076.

The previous prime is 6511650065051. The next prime is 6511650065113. The reversal of 6511650065077 is 7705600561156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4897718660241 + 1613931404836 = 2213079^2 + 1270406^2 .

It is a cyclic number.

It is not a de Polignac number, because 6511650065077 - 2¹⁵ = 6511650032309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6511650065077.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6511650065477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3255825032538 + 3255825032539.

It is an arithmetic number, because the mean of its divisors is an integer number (3255825032539).

Almost surely, 2^{6511650065077} is an apocalyptic number.

It is an amenable number.

6511650065077 is a deficient number, since it is larger than the sum of its proper divisors (1).

6511650065077 is an equidigital number, since it uses as much as digits as its factorization.

6511650065077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1323000, while the sum is 49.

The spelling of 6511650065077 in words is "six trillion, five hundred eleven billion, six hundred fifty million, sixty-five thousand, seventy-seven".