65065800511 has 4 divisors (see below), whose sum is σ = 65075557792. Its totient is φ = 65056043232.

The previous prime is 65065800473. The next prime is 65065800529. The reversal of 65065800511 is 11500856056.

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

It is a cyclic number.

It is not a de Polignac number, because 65065800511 - 2¹⁷ = 65065669439 is a prime.

It is a super-2 number, since 2×65065800511² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65065800581) 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, 4868631 + ... + 4881976.

It is an arithmetic number, because the mean of its divisors is an integer number (16268889448).

Almost surely, 2^65065800511 is an apocalyptic number.

65065800511 is the 147271-st hex number.

65065800511 is a deficient number, since it is larger than the sum of its proper divisors (9757281).

65065800511 is an equidigital number, since it uses as much as digits as its factorization.

65065800511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9757280.

The product of its (nonzero) digits is 36000, while the sum is 37.

The spelling of 65065800511 in words is "sixty-five billion, sixty-five million, eight hundred thousand, five hundred eleven".