65571051662243 has 2 divisors, whose sum is σ = 65571051662244. Its totient is φ = 65571051662242.

The previous prime is 65571051662183. The next prime is 65571051662309. The reversal of 65571051662243 is 34226615017556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65571051662243 - 2²⁸ = 65570783226787 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (65571051667243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32785525831121 + 32785525831122.

It is an arithmetic number, because the mean of its divisors is an integer number (32785525831122).

Almost surely, 2^{65571051662243} is an apocalyptic number.

65571051662243 is a deficient number, since it is larger than the sum of its proper divisors (1).

65571051662243 is an equidigital number, since it uses as much as digits as its factorization.

65571051662243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072000, while the sum is 53.

Adding to 65571051662243 its reverse (34226615017556), we get a palindrome (99797666679799).

The spelling of 65571051662243 in words is "sixty-five trillion, five hundred seventy-one billion, fifty-one million, six hundred sixty-two thousand, two hundred forty-three".