2016564663065 has 8 divisors (see below), whose sum is σ = 2421655618248. Its totient is φ = 1612066382080.

The previous prime is 2016564663053. The next prime is 2016564663067. The reversal of 2016564663065 is 5603664656102.

It can be written as a sum of positive squares in 4 ways, for example, as 4079121424 + 2012485541641 = 63868^2 + 1418621^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2016564663065 - 2⁸ = 2016564662809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2016564663067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148161062 + ... + 148174671.

It is an arithmetic number, because the mean of its divisors is an integer number (302706952281).

Almost surely, 2^{2016564663065} is an apocalyptic number.

It is an amenable number.

2016564663065 is a deficient number, since it is larger than the sum of its proper divisors (405090955183).

2016564663065 is a wasteful number, since it uses less digits than its factorization.

2016564663065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296337099.

The product of its (nonzero) digits is 4665600, while the sum is 50.

The spelling of 2016564663065 in words is "two trillion, sixteen billion, five hundred sixty-four million, six hundred sixty-three thousand, sixty-five".