636320120043 has 8 divisors (see below), whose sum is σ = 848442662208. Its totient is φ = 424205495624.

The previous prime is 636320120041. The next prime is 636320120077. The reversal of 636320120043 is 340021023636.

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 636320120043 - 2¹ = 636320120041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (636320120041) 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, 1789305 + ... + 2115242.

It is an arithmetic number, because the mean of its divisors is an integer number (106055332776).

Almost surely, 2^636320120043 is an apocalyptic number.

636320120043 is a deficient number, since it is larger than the sum of its proper divisors (212122542165).

636320120043 is a wasteful number, since it uses less digits than its factorization.

636320120043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3958873.

The product of its (nonzero) digits is 15552, while the sum is 30.

Adding to 636320120043 its reverse (340021023636), we get a palindrome (976341143679).

The spelling of 636320120043 in words is "six hundred thirty-six billion, three hundred twenty million, one hundred twenty thousand, forty-three".