53403466561 has 2 divisors, whose sum is σ = 53403466562. Its totient is φ = 53403466560.

The previous prime is 53403466549. The next prime is 53403466591. The reversal of 53403466561 is 16566430435.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50895360000 + 2508106561 = 225600^2 + 50081^2 .

It is a cyclic number.

It is not a de Polignac number, because 53403466561 - 2⁹ = 53403466049 is a prime.

It is not a weakly prime, because it can be changed into another prime (53403466531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26701733280 + 26701733281.

It is an arithmetic number, because the mean of its divisors is an integer number (26701733281).

Almost surely, 2^53403466561 is an apocalyptic number.

It is an amenable number.

53403466561 is a deficient number, since it is larger than the sum of its proper divisors (1).

53403466561 is an equidigital number, since it uses as much as digits as its factorization.

53403466561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 43.

Adding to 53403466561 its reverse (16566430435), we get a palindrome (69969896996).

The spelling of 53403466561 in words is "fifty-three billion, four hundred three million, four hundred sixty-six thousand, five hundred sixty-one".