2001324631065 has 32 divisors (see below), whose sum is σ = 3246199255296. Its totient is φ = 1052681794560.

The previous prime is 2001324630961. The next prime is 2001324631069. The reversal of 2001324631065 is 5601364231002.

It is not a de Polignac number, because 2001324631065 - 2¹⁵ = 2001324598297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001324631069) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19282660 + ... + 19386170.

It is an arithmetic number, because the mean of its divisors is an integer number (101443726728).

Almost surely, 2^{2001324631065} is an apocalyptic number.

It is an amenable number.

2001324631065 is a deficient number, since it is larger than the sum of its proper divisors (1244874624231).

2001324631065 is a wasteful number, since it uses less digits than its factorization.

2001324631065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121249.

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 2001324631065 its reverse (5601364231002), we get a palindrome (7602688862067).

The spelling of 2001324631065 in words is "two trillion, one billion, three hundred twenty-four million, six hundred thirty-one thousand, sixty-five".