634430043243201 has 16 divisors (see below), whose sum is σ = 875077824456000. Its totient is φ = 408367875521088.

The previous prime is 634430043243169. The next prime is 634430043243223. The reversal of 634430043243201 is 102342340034436.

It is not a de Polignac number, because 634430043243201 - 2⁵ = 634430043243169 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 634430043243201.

It is not an unprimeable number, because it can be changed into a prime (634430043243001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33553650 + ... + 48935748.

It is an arithmetic number, because the mean of its divisors is an integer number (54692364028500).

Almost surely, 2^{634430043243201} is an apocalyptic number.

It is an amenable number.

634430043243201 is a deficient number, since it is larger than the sum of its proper divisors (240647781212799).

634430043243201 is a wasteful number, since it uses less digits than its factorization.

634430043243201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15856208.

The product of its (nonzero) digits is 497664, while the sum is 39.

Adding to 634430043243201 its reverse (102342340034436), we get a palindrome (736772383277637).

The spelling of 634430043243201 in words is "six hundred thirty-four trillion, four hundred thirty billion, forty-three million, two hundred forty-three thousand, two hundred one".