65286529280065 has 4 divisors (see below), whose sum is σ = 78343835136084. Its totient is φ = 52229223424048.

The previous prime is 65286529280053. The next prime is 65286529280069. The reversal of 65286529280065 is 56008292568256.

It is a happy number.

It is a Cunningham number, because it is equal to 8080008²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23503142784016 + 41783386496049 = 4848004^2 + 6464007^2 .

It is a cyclic number.

It is not a de Polignac number, because 65286529280065 - 2⁵ = 65286529280033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65286529279979 and 65286529280006.

It is not an unprimeable number, because it can be changed into a prime (65286529280069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6528652928002 + ... + 6528652928011.

It is an arithmetic number, because the mean of its divisors is an integer number (19585958784021).

Almost surely, 2^{65286529280065} is an apocalyptic number.

It is an amenable number.

65286529280065 is a deficient number, since it is larger than the sum of its proper divisors (13057305856019).

65286529280065 is a wasteful number, since it uses less digits than its factorization.

65286529280065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13057305856018.

The product of its (nonzero) digits is 124416000, while the sum is 64.

The spelling of 65286529280065 in words is "sixty-five trillion, two hundred eighty-six billion, five hundred twenty-nine million, two hundred eighty thousand, sixty-five".