2016382356865 has 4 divisors (see below), whose sum is σ = 2419658828244. Its totient is φ = 1613105885488.

The previous prime is 2016382356809. The next prime is 2016382356869. The reversal of 2016382356865 is 5686532836102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 390573751681 + 1625808605184 = 624959^2 + 1275072^2 .

It is a cyclic number.

It is not a de Polignac number, because 2016382356865 - 2¹¹ = 2016382354817 is a prime.

It is a super-3 number, since 3×2016382356865³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2016382356869) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 201638235682 + ... + 201638235691.

It is an arithmetic number, because the mean of its divisors is an integer number (604914707061).

Almost surely, 2^{2016382356865} is an apocalyptic number.

It is an amenable number.

2016382356865 is a deficient number, since it is larger than the sum of its proper divisors (403276471379).

2016382356865 is an equidigital number, since it uses as much as digits as its factorization.

2016382356865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403276471378.

The product of its (nonzero) digits is 12441600, while the sum is 55.

The spelling of 2016382356865 in words is "two trillion, sixteen billion, three hundred eighty-two million, three hundred fifty-six thousand, eight hundred sixty-five".