65520590281441 has 9 divisors (see below), whose sum is σ = 65767252329363. Its totient is φ = 65274849993480.

The previous prime is 65520590281439. The next prime is 65520590281457. The reversal of 65520590281441 is 14418209502556.

The square root of 65520590281441 is 8094479.

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

It can be written as a sum of positive squares in only one way, i.e., 4310934485841 + 61209655795600 = 2076279^2 + 7823660^2 .

It is not a de Polignac number, because 65520590281441 - 2¹ = 65520590281439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65520590281141) 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, 2177399806 + ... + 2177429896.

Almost surely, 2^{65520590281441} is an apocalyptic number.

65520590281441 is the 8094479-th square number.

65520590281441 is the 4047240-th centered octagonal number.

It is an amenable number.

65520590281441 is a deficient number, since it is larger than the sum of its proper divisors (246662047922).

65520590281441 is an frugal number, since it uses more digits than its factorization.

65520590281441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60720 (or 30360 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 52.

Adding to 65520590281441 its reverse (14418209502556), we get a palindrome (79938799783997).

The spelling of 65520590281441 in words is "sixty-five trillion, five hundred twenty billion, five hundred ninety million, two hundred eighty-one thousand, four hundred forty-one".