636120460241 has 6 divisors (see below), whose sum is σ = 739976861970. Its totient is φ = 545246108736.

The previous prime is 636120460231. The next prime is 636120460249. The reversal of 636120460241 is 142064021636.

It can be written as a sum of positive squares in only one way, i.e., 629040920641 + 7079539600 = 793121^2 + 84140^2 .

It is not a de Polignac number, because 636120460241 - 2⁶ = 636120460177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (636120460249) 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 5 ways as a sum of consecutive naturals, for example, 6491025056 + ... + 6491025153.

It is an arithmetic number, because the mean of its divisors is an integer number (123329476995).

Almost surely, 2^636120460241 is an apocalyptic number.

It is an amenable number.

636120460241 is a deficient number, since it is larger than the sum of its proper divisors (103856401729).

636120460241 is a wasteful number, since it uses less digits than its factorization.

636120460241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12982050223 (or 12982050216 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

Adding to 636120460241 its reverse (142064021636), we get a palindrome (778184481877).

The spelling of 636120460241 in words is "six hundred thirty-six billion, one hundred twenty million, four hundred sixty thousand, two hundred forty-one".