640584516554501 has 8 divisors (see below), whose sum is σ = 645849158582784. Its totient is φ = 635339778655680.

The previous prime is 640584516554467. The next prime is 640584516554537. The reversal of 640584516554501 is 105455615485046.

640584516554501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 640584516554501 - 2²⁶ = 640584449445637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640584516554561) 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, 4975967735 + ... + 4976096468.

It is an arithmetic number, because the mean of its divisors is an integer number (80731144822848).

Almost surely, 2^{640584516554501} is an apocalyptic number.

It is an amenable number.

640584516554501 is a deficient number, since it is larger than the sum of its proper divisors (5264642028283).

640584516554501 is a wasteful number, since it uses less digits than its factorization.

640584516554501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9952064731.

The product of its (nonzero) digits is 57600000, while the sum is 59.

The spelling of 640584516554501 in words is "six hundred forty trillion, five hundred eighty-four billion, five hundred sixteen million, five hundred fifty-four thousand, five hundred one".