65500021200511 has 8 divisors (see below), whose sum is σ = 69146086394880. Its totient is φ = 61873825571928.

The previous prime is 65500021200463. The next prime is 65500021200517. The reversal of 65500021200511 is 11500212000556.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65500021200511 is a prime.

It is a super-2 number, since 2×65500021200511² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65500021200511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65500021200517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4967384671 + ... + 4967397856.

It is an arithmetic number, because the mean of its divisors is an integer number (8643260799360).

Almost surely, 2^{65500021200511} is an apocalyptic number.

65500021200511 is a deficient number, since it is larger than the sum of its proper divisors (3646065194369).

65500021200511 is a wasteful number, since it uses less digits than its factorization.

65500021200511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9934782893.

The product of its (nonzero) digits is 3000, while the sum is 28.

The spelling of 65500021200511 in words is "sixty-five trillion, five hundred billion, twenty-one million, two hundred thousand, five hundred eleven".