65506765165 has 16 divisors (see below), whose sum is σ = 78772193280. Its totient is φ = 52296148800.

The previous prime is 65506765117. The next prime is 65506765189. The reversal of 65506765165 is 56156760556.

It is not a de Polignac number, because 65506765165 - 2¹¹ = 65506763117 is a prime.

It is a super-2 number, since 2×65506765165² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5040646 + ... + 5053624.

It is an arithmetic number, because the mean of its divisors is an integer number (4923262080).

Almost surely, 2^65506765165 is an apocalyptic number.

It is an amenable number.

65506765165 is a deficient number, since it is larger than the sum of its proper divisors (13265428115).

65506765165 is a wasteful number, since it uses less digits than its factorization.

65506765165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15012.

The product of its (nonzero) digits is 5670000, while the sum is 52.

The spelling of 65506765165 in words is "sixty-five billion, five hundred six million, seven hundred sixty-five thousand, one hundred sixty-five".