65651560993633 has 2 divisors, whose sum is σ = 65651560993634. Its totient is φ = 65651560993632.

The previous prime is 65651560993631. The next prime is 65651560993649. The reversal of 65651560993633 is 33639906515656.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59072628400384 + 6578932593249 = 7685872^2 + 2564943^2 .

It is a cyclic number.

It is not a de Polignac number, because 65651560993633 - 2¹ = 65651560993631 is a prime.

Together with 65651560993631, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (65651560993631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32825780496816 + 32825780496817.

It is an arithmetic number, because the mean of its divisors is an integer number (32825780496817).

Almost surely, 2^{65651560993633} is an apocalyptic number.

It is an amenable number.

65651560993633 is a deficient number, since it is larger than the sum of its proper divisors (1).

65651560993633 is an equidigital number, since it uses as much as digits as its factorization.

65651560993633 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 354294000, while the sum is 67.

The spelling of 65651560993633 in words is "sixty-five trillion, six hundred fifty-one billion, five hundred sixty million, nine hundred ninety-three thousand, six hundred thirty-three".