65566066583 has 2 divisors, whose sum is σ = 65566066584. Its totient is φ = 65566066582.

The previous prime is 65566066549. The next prime is 65566066591. The reversal of 65566066583 is 38566066556.

65566066583 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65566066583 - 2²² = 65561872279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65566066513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32783033291 + 32783033292.

It is an arithmetic number, because the mean of its divisors is an integer number (32783033292).

Almost surely, 2^65566066583 is an apocalyptic number.

65566066583 is a deficient number, since it is larger than the sum of its proper divisors (1).

65566066583 is an equidigital number, since it uses as much as digits as its factorization.

65566066583 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328000, while the sum is 56.

The spelling of 65566066583 in words is "sixty-five billion, five hundred sixty-six million, sixty-six thousand, five hundred eighty-three".