65328277273281 has 135 divisors (see below), whose sum is σ = 108670688394177. Its totient is φ = 37789669265040.

The previous prime is 65328277273229. The next prime is 65328277273307. The reversal of 65328277273281 is 18237277282356.

The square root of 65328277273281 is 8082591.

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

65328277273281 is a `hidden beast` number, since 6 + 5 + 3 + 2 + 82 + 7 + 7 + 273 + 281 = 666.

It is not a de Polignac number, because 65328277273281 - 2¹⁹ = 65328276748993 is a prime.

It is a super-2 number, since 2×65328277273281² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65328277273211) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 141097790856 + ... + 141097791318.

Almost surely, 2^{65328277273281} is an apocalyptic number.

65328277273281 is the 8082591-st square number.

65328277273281 is the 4041296-th centered octagonal number.

It is an amenable number.

65328277273281 is a deficient number, since it is larger than the sum of its proper divisors (43342411120896).

65328277273281 is an frugal number, since it uses more digits than its factorization.

65328277273281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046 (or 500 counting only the distinct ones).

The product of its digits is 94832640, while the sum is 63.

The spelling of 65328277273281 in words is "sixty-five trillion, three hundred twenty-eight billion, two hundred seventy-seven million, two hundred seventy-three thousand, two hundred eighty-one".