65020055503565 has 8 divisors (see below), whose sum is σ = 78024262506648. Its totient is φ = 52015913801280.

The previous prime is 65020055503531. The next prime is 65020055503567. The reversal of 65020055503565 is 56530555002056.

It can be written as a sum of positive squares in 4 ways, for example, as 12744350225929 + 52275705277636 = 3569923^2 + 7230194^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65020055503565 - 2¹⁰ = 65020055502541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65020055503567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14107262 + ... + 18139871.

It is an arithmetic number, because the mean of its divisors is an integer number (9753032813331).

Almost surely, 2^{65020055503565} is an apocalyptic number.

It is an amenable number.

65020055503565 is a deficient number, since it is larger than the sum of its proper divisors (13004207003083).

65020055503565 is a wasteful number, since it uses less digits than its factorization.

65020055503565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32650399.

The product of its (nonzero) digits is 3375000, while the sum is 47.

The spelling of 65020055503565 in words is "sixty-five trillion, twenty billion, fifty-five million, five hundred three thousand, five hundred sixty-five".