65243453784964 has 81 divisors (see below), whose sum is σ = 143822865837231. Its totient is φ = 25810015533120.

The previous prime is 65243453784947. The next prime is 65243453784989. The reversal of 65243453784964 is 46948735434256.

The square root of 65243453784964 is 8077342.

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

It can be written as a sum of positive squares in 4 ways, for example, as 14915893652100 + 50327560132864 = 3862110^2 + 7094192^2 .

It is a junction number, because it is equal to n+sod(n) for n = 65243453784893 and 65243453784902.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1470054054 + ... + 1470098434.

Almost surely, 2^{65243453784964} is an apocalyptic number.

65243453784964 is the 8077342-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65243453784964

65243453784964 is an abundant number, since it is smaller than the sum of its proper divisors (78579412052267).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65243453784964 is an frugal number, since it uses more digits than its factorization.

65243453784964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88806 (or 44403 counting only the distinct ones).

The product of its digits is 2090188800, while the sum is 70.

The spelling of 65243453784964 in words is "sixty-five trillion, two hundred forty-three billion, four hundred fifty-three million, seven hundred eighty-four thousand, nine hundred sixty-four".