636555485413 has 4 divisors (see below), whose sum is σ = 636558411168. Its totient is φ = 636552559660.

The previous prime is 636555485411. The next prime is 636555485471. The reversal of 636555485413 is 314584555636.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 636555485413 - 2¹ = 636555485411 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 (636555485411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1107793 + ... + 1581238.

It is an arithmetic number, because the mean of its divisors is an integer number (159139602792).

Almost surely, 2^636555485413 is an apocalyptic number.

It is an amenable number.

636555485413 is a deficient number, since it is larger than the sum of its proper divisors (2925755).

636555485413 is a wasteful number, since it uses less digits than its factorization.

636555485413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2925754.

The product of its digits is 25920000, while the sum is 55.

The spelling of 636555485413 in words is "six hundred thirty-six billion, five hundred fifty-five million, four hundred eighty-five thousand, four hundred thirteen".