3686165653545 has 40 divisors (see below), whose sum is σ = 6610113026880. Its totient is φ = 1965264832800.

The previous prime is 3686165653523. The next prime is 3686165653553. The reversal of 3686165653545 is 5453565616863.

3686165653545 is a `hidden beast` number, since 3 + 6 + 8 + 6 + 1 + 6 + 56 + 535 + 45 = 666.

It is not a de Polignac number, because 3686165653545 - 2¹⁶ = 3686165588009 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 441565 + ... + 2750874.

It is an arithmetic number, because the mean of its divisors is an integer number (165252825672).

Almost surely, 2^{3686165653545} is an apocalyptic number.

It is an amenable number.

3686165653545 is a deficient number, since it is larger than the sum of its proper divisors (2923947373335).

3686165653545 is a wasteful number, since it uses less digits than its factorization.

3686165653545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3195307 (or 3195298 counting only the distinct ones).

The product of its digits is 233280000, while the sum is 63.

The spelling of 3686165653545 in words is "three trillion, six hundred eighty-six billion, one hundred sixty-five million, six hundred fifty-three thousand, five hundred forty-five".