636501064106 has 4 divisors (see below), whose sum is σ = 954751596162. Its totient is φ = 318250532052.

The previous prime is 636501064103. The next prime is 636501064123. The reversal of 636501064106 is 601460105636.

636501064106 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 636180116881 + 320947225 = 797609^2 + 17915^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 636501064106.

It is not an unprimeable number, because it can be changed into a prime (636501064103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159125266025 + ... + 159125266028.

Almost surely, 2^636501064106 is an apocalyptic number.

636501064106 is a deficient number, since it is larger than the sum of its proper divisors (318250532056).

636501064106 is a wasteful number, since it uses less digits than its factorization.

636501064106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318250532055.

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 636501064106 in words is "six hundred thirty-six billion, five hundred one million, sixty-four thousand, one hundred six".