33945609665 has 16 divisors (see below), whose sum is σ = 46776726720. Its totient is φ = 23388361920.

The previous prime is 33945609637. The next prime is 33945609671. The reversal of 33945609665 is 56690654933.

It is not a de Polignac number, because 33945609665 - 2⁸ = 33945609409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 33945609665.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16240874 + ... + 16242963.

It is an arithmetic number, because the mean of its divisors is an integer number (2923545420).

Almost surely, 2^33945609665 is an apocalyptic number.

It is an amenable number.

33945609665 is a deficient number, since it is larger than the sum of its proper divisors (12831117055).

33945609665 is a wasteful number, since it uses less digits than its factorization.

33945609665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32483872.

The product of its (nonzero) digits is 15746400, while the sum is 56.

The spelling of 33945609665 in words is "thirty-three billion, nine hundred forty-five million, six hundred nine thousand, six hundred sixty-five".