2065640532513 has 8 divisors (see below), whose sum is σ = 2755880184288. Its totient is φ = 1376247284544.

The previous prime is 2065640532419. The next prime is 2065640532521. The reversal of 2065640532513 is 3152350465602.

It is a happy number.

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

It is not a de Polignac number, because 2065640532513 - 2²⁸ = 2065372097057 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2065640532313) 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, 211595256 + ... + 211605017.

It is an arithmetic number, because the mean of its divisors is an integer number (344485023036).

Almost surely, 2^{2065640532513} is an apocalyptic number.

It is an amenable number.

2065640532513 is a deficient number, since it is larger than the sum of its proper divisors (690239651775).

2065640532513 is a wasteful number, since it uses less digits than its factorization.

2065640532513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423201903.

The product of its (nonzero) digits is 648000, while the sum is 42.

The spelling of 2065640532513 in words is "two trillion, sixty-five billion, six hundred forty million, five hundred thirty-two thousand, five hundred thirteen".