640241524104321 has 16 divisors (see below), whose sum is σ = 858773872954368. Its totient is φ = 424268469464400.

The previous prime is 640241524104319. The next prime is 640241524104349. The reversal of 640241524104321 is 123401425142046.

It is not a de Polignac number, because 640241524104321 - 2¹ = 640241524104319 is a prime.

It is a super-2 number, since 2×640241524104321² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 640241524104321.

It is not an unprimeable number, because it can be changed into a prime (640241524154321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59098836 + ... + 69088026.

It is an arithmetic number, because the mean of its divisors is an integer number (53673367059648).

Almost surely, 2^{640241524104321} is an apocalyptic number.

It is an amenable number.

640241524104321 is a deficient number, since it is larger than the sum of its proper divisors (218532348850047).

640241524104321 is a wasteful number, since it uses less digits than its factorization.

640241524104321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10117292.

The product of its (nonzero) digits is 184320, while the sum is 39.

Adding to 640241524104321 its reverse (123401425142046), we get a palindrome (763642949246367).

The spelling of 640241524104321 in words is "six hundred forty trillion, two hundred forty-one billion, five hundred twenty-four million, one hundred four thousand, three hundred twenty-one".