65161065115511 has 2 divisors, whose sum is σ = 65161065115512. Its totient is φ = 65161065115510.

The previous prime is 65161065115453. The next prime is 65161065115529. The reversal of 65161065115511 is 11551156016156.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65161065115511 - 2¹⁴ = 65161065099127 is a prime.

It is a super-2 number, since 2×65161065115511² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65161065145511) 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 as a sum of consecutive naturals, namely, 32580532557755 + 32580532557756.

It is an arithmetic number, because the mean of its divisors is an integer number (32580532557756).

Almost surely, 2^{65161065115511} is an apocalyptic number.

65161065115511 is a deficient number, since it is larger than the sum of its proper divisors (1).

65161065115511 is an equidigital number, since it uses as much as digits as its factorization.

65161065115511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 135000, while the sum is 44.

The spelling of 65161065115511 in words is "sixty-five trillion, one hundred sixty-one billion, sixty-five million, one hundred fifteen thousand, five hundred eleven".