640116255353 has 8 divisors (see below), whose sum is σ = 663336245760. Its totient is φ = 617056957440.

The previous prime is 640116255329. The next prime is 640116255421. The reversal of 640116255353 is 353552611046.

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

It is a cyclic number.

It is not a de Polignac number, because 640116255353 - 2²⁰ = 640115206777 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 640116255353.

It is not an unprimeable number, because it can be changed into a prime (640116252353) 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, 40165013 + ... + 40180946.

It is an arithmetic number, because the mean of its divisors is an integer number (82917030720).

Almost surely, 2^640116255353 is an apocalyptic number.

It is an amenable number.

640116255353 is a deficient number, since it is larger than the sum of its proper divisors (23219990407).

640116255353 is a wasteful number, since it uses less digits than its factorization.

640116255353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80346247.

The product of its (nonzero) digits is 324000, while the sum is 41.

Adding to 640116255353 its reverse (353552611046), we get a palindrome (993668866399).

The spelling of 640116255353 in words is "six hundred forty billion, one hundred sixteen million, two hundred fifty-five thousand, three hundred fifty-three".