6511650065477 has 2 divisors, whose sum is σ = 6511650065478. Its totient is φ = 6511650065476.

The previous prime is 6511650065467. The next prime is 6511650065561. The reversal of 6511650065477 is 7745600561156.

6511650065477 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3704446993636 + 2807203071841 = 1924694^2 + 1675471^2 .

It is a cyclic number.

It is not a de Polignac number, because 6511650065477 - 2⁴ = 6511650065461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6511650065407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3255825032738 + 3255825032739.

It is an arithmetic number, because the mean of its divisors is an integer number (3255825032739).

Almost surely, 2^{6511650065477} is an apocalyptic number.

It is an amenable number.

6511650065477 is a deficient number, since it is larger than the sum of its proper divisors (1).

6511650065477 is an equidigital number, since it uses as much as digits as its factorization.

6511650065477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292000, while the sum is 53.

The spelling of 6511650065477 in words is "six trillion, five hundred eleven billion, six hundred fifty million, sixty-five thousand, four hundred seventy-seven".