65110065506161 has 4 divisors (see below), whose sum is σ = 70118532083572. Its totient is φ = 60101598928752.

The previous prime is 65110065506147. The next prime is 65110065506191. The reversal of 65110065506161 is 16160556001156.

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 44255490150400 + 20854575355761 = 6652480^2 + 4566681^2 .

It is a cyclic number.

It is not a de Polignac number, because 65110065506161 - 2³⁹ = 64560309692273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65110065506191) 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, 2504233288686 + ... + 2504233288711.

It is an arithmetic number, because the mean of its divisors is an integer number (17529633020893).

Almost surely, 2^{65110065506161} is an apocalyptic number.

It is an amenable number.

65110065506161 is a deficient number, since it is larger than the sum of its proper divisors (5008466577411).

65110065506161 is a wasteful number, since it uses less digits than its factorization.

65110065506161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5008466577410.

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 65110065506161 in words is "sixty-five trillion, one hundred ten billion, sixty-five million, five hundred six thousand, one hundred sixty-one".