65555050513 has 2 divisors, whose sum is σ = 65555050514. Its totient is φ = 65555050512.

The previous prime is 65555050493. The next prime is 65555050549. The reversal of 65555050513 is 31505055556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65077540609 + 477509904 = 255103^2 + 21852^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65555050513 is a prime.

It is not a weakly prime, because it can be changed into another prime (65555050553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32777525256 + 32777525257.

It is an arithmetic number, because the mean of its divisors is an integer number (32777525257).

Almost surely, 2^65555050513 is an apocalyptic number.

It is an amenable number.

65555050513 is a deficient number, since it is larger than the sum of its proper divisors (1).

65555050513 is an equidigital number, since it uses as much as digits as its factorization.

65555050513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 281250, while the sum is 40.

The spelling of 65555050513 in words is "sixty-five billion, five hundred fifty-five million, fifty thousand, five hundred thirteen".