65655350289 has 9 divisors (see below), whose sum is σ = 94836616329. Its totient is φ = 43769721060.

The previous prime is 65655350279. The next prime is 65655350291. The reversal of 65655350289 is 98205355656.

The square root of 65655350289 is 256233.

It is a perfect power (a square), and thus also a powerful number.

65655350289 is a `hidden beast` number, since 6 + 5 + 6 + 5 + 5 + 350 + 289 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 65655350289 - 2⁹ = 65655349777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65655350279) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 725994 + ... + 811404.

Almost surely, 2^65655350289 is an apocalyptic number.

65655350289 is the 256233-rd square number.

65655350289 is the 128117-th centered octagonal number.

It is an amenable number.

65655350289 is a deficient number, since it is larger than the sum of its proper divisors (29181266040).

65655350289 is an frugal number, since it uses more digits than its factorization.

65655350289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170828 (or 85414 counting only the distinct ones).

The product of its (nonzero) digits is 9720000, while the sum is 54.

The spelling of 65655350289 in words is "sixty-five billion, six hundred fifty-five million, three hundred fifty thousand, two hundred eighty-nine".