52816619521 has 2 divisors, whose sum is σ = 52816619522. Its totient is φ = 52816619520.

The previous prime is 52816619497. The next prime is 52816619617. The reversal of 52816619521 is 12591661825.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45088275600 + 7728343921 = 212340^2 + 87911^2 .

It is a cyclic number.

It is not a de Polignac number, because 52816619521 - 2¹¹ = 52816617473 is a prime.

It is not a weakly prime, because it can be changed into another prime (52814619521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26408309760 + 26408309761.

It is an arithmetic number, because the mean of its divisors is an integer number (26408309761).

Almost surely, 2^52816619521 is an apocalyptic number.

It is an amenable number.

52816619521 is a deficient number, since it is larger than the sum of its proper divisors (1).

52816619521 is an equidigital number, since it uses as much as digits as its factorization.

52816619521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 46.

The spelling of 52816619521 in words is "fifty-two billion, eight hundred sixteen million, six hundred nineteen thousand, five hundred twenty-one".