636612344066122 has 32 divisors (see below), whose sum is σ = 1020916689571584. Its totient is φ = 296670782649600.

The previous prime is 636612344066117. The next prime is 636612344066129. The reversal of 636612344066122 is 221660443216636.

It is a self number, because there is not a number n which added to its sum of digits gives 636612344066122.

It is not an unprimeable number, because it can be changed into a prime (636612344066129) 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 15 ways as a sum of consecutive naturals, for example, 376219672 + ... + 377908012.

It is an arithmetic number, because the mean of its divisors is an integer number (31903646549112).

Almost surely, 2^{636612344066122} is an apocalyptic number.

636612344066122 is a deficient number, since it is larger than the sum of its proper divisors (384304345505462).

636612344066122 is a wasteful number, since it uses less digits than its factorization.

636612344066122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796134.

The product of its (nonzero) digits is 8957952, while the sum is 52.

The spelling of 636612344066122 in words is "six hundred thirty-six trillion, six hundred twelve billion, three hundred forty-four million, sixty-six thousand, one hundred twenty-two".