65253550561 has 2 divisors, whose sum is σ = 65253550562. Its totient is φ = 65253550560.

The previous prime is 65253550547. The next prime is 65253550577. The reversal of 65253550561 is 16505535256.

65253550561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60439272336 + 4814278225 = 245844^2 + 69385^2 .

It is a cyclic number.

It is not a de Polignac number, because 65253550561 - 2¹¹ = 65253548513 is a prime.

It is not a weakly prime, because it can be changed into another prime (65253550541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32626775280 + 32626775281.

It is an arithmetic number, because the mean of its divisors is an integer number (32626775281).

Almost surely, 2^65253550561 is an apocalyptic number.

It is an amenable number.

65253550561 is a deficient number, since it is larger than the sum of its proper divisors (1).

65253550561 is an equidigital number, since it uses as much as digits as its factorization.

65253550561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 675000, while the sum is 43.

The spelling of 65253550561 in words is "sixty-five billion, two hundred fifty-three million, five hundred fifty thousand, five hundred sixty-one".