65165566516 has 12 divisors (see below), whose sum is σ = 114043840288. Its totient is φ = 32581612152.

The previous prime is 65165566507. The next prime is 65165566537. The reversal of 65165566516 is 61566556156.

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 3 ways as a sum of consecutive naturals, for example, 160986 + ... + 395281.

Almost surely, 2^65165566516 is an apocalyptic number.

It is an amenable number.

65165566516 is a deficient number, since it is larger than the sum of its proper divisors (48878273772).

65165566516 is a wasteful number, since it uses less digits than its factorization.

65165566516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585558 (or 585556 counting only the distinct ones).

The product of its digits is 4860000, while the sum is 52.

The spelling of 65165566516 in words is "sixty-five billion, one hundred sixty-five million, five hundred sixty-six thousand, five hundred sixteen".