65005161000611 has 4 divisors (see below), whose sum is σ = 70005558000672. Its totient is φ = 60004764000552.

The previous prime is 65005161000581. The next prime is 65005161000613. The reversal of 65005161000611 is 11600016150056.

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 65005161000611 - 2³⁸ = 64730283093667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65005161000613) 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, 2500198500011 + ... + 2500198500036.

It is an arithmetic number, because the mean of its divisors is an integer number (17501389500168).

Almost surely, 2^{65005161000611} is an apocalyptic number.

65005161000611 is a deficient number, since it is larger than the sum of its proper divisors (5000397000061).

65005161000611 is a wasteful number, since it uses less digits than its factorization.

65005161000611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000397000060.

The product of its (nonzero) digits is 5400, while the sum is 32.

Adding to 65005161000611 its reverse (11600016150056), we get a palindrome (76605177150667).

The spelling of 65005161000611 in words is "sixty-five trillion, five billion, one hundred sixty-one million, six hundred eleven", and thus it is an aban number.