65535053561 has 2 divisors, whose sum is σ = 65535053562. Its totient is φ = 65535053560.

The previous prime is 65535053513. The next prime is 65535053569. The reversal of 65535053561 is 16535053556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51685294336 + 13849759225 = 227344^2 + 117685^2 .

It is a cyclic number.

It is not a de Polignac number, because 65535053561 - 2⁶ = 65535053497 is a prime.

It is not a weakly prime, because it can be changed into another prime (65535053569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32767526780 + 32767526781.

It is an arithmetic number, because the mean of its divisors is an integer number (32767526781).

Almost surely, 2^65535053561 is an apocalyptic number.

It is an amenable number.

65535053561 is a deficient number, since it is larger than the sum of its proper divisors (1).

65535053561 is an equidigital number, since it uses as much as digits as its factorization.

65535053561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1012500, while the sum is 44.

The spelling of 65535053561 in words is "sixty-five billion, five hundred thirty-five million, fifty-three thousand, five hundred sixty-one".