65580805253 has 2 divisors, whose sum is σ = 65580805254. Its totient is φ = 65580805252.

The previous prime is 65580805249. The next prime is 65580805273. The reversal of 65580805253 is 35250808556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61582392964 + 3998412289 = 248158^2 + 63233^2 .

It is a cyclic number.

It is not a de Polignac number, because 65580805253 - 2² = 65580805249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65580805198 and 65580805207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65580805273) 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, 32790402626 + 32790402627.

It is an arithmetic number, because the mean of its divisors is an integer number (32790402627).

Almost surely, 2^65580805253 is an apocalyptic number.

It is an amenable number.

65580805253 is a deficient number, since it is larger than the sum of its proper divisors (1).

65580805253 is an equidigital number, since it uses as much as digits as its factorization.

65580805253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440000, while the sum is 47.

The spelling of 65580805253 in words is "sixty-five billion, five hundred eighty million, eight hundred five thousand, two hundred fifty-three".