634656727656436 has 12 divisors (see below), whose sum is σ = 1134280109003328. Its totient is φ = 310576696512632.

The previous prime is 634656727656403. The next prime is 634656727656437.

634656727656436 is nontrivially palindromic in base 10.

634656727656436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634656727656437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1687916828686 + ... + 1687916829061.

It is an arithmetic number, because the mean of its divisors is an integer number (94523342416944).

Almost surely, 2^{634656727656436} is an apocalyptic number.

It is an amenable number.

634656727656436 is a deficient number, since it is larger than the sum of its proper divisors (499623381346892).

634656727656436 is a wasteful number, since it uses less digits than its factorization.

634656727656436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3375833657798 (or 3375833657796 counting only the distinct ones).

The product of its digits is 16460236800, while the sum is 76.

The spelling of 634656727656436 in words is "six hundred thirty-four trillion, six hundred fifty-six billion, seven hundred twenty-seven million, six hundred fifty-six thousand, four hundred thirty-six".