634066660436 has 24 divisors (see below), whose sum is σ = 1210595349600. Its totient is φ = 288187248800.

The previous prime is 634066660421. The next prime is 634066660439.

634066660436 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634066660439) 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 7 ways as a sum of consecutive naturals, for example, 101135 + ... + 1130646.

It is an arithmetic number, because the mean of its divisors is an integer number (50441472900).

Almost surely, 2^634066660436 is an apocalyptic number.

It is an amenable number.

634066660436 is a deficient number, since it is larger than the sum of its proper divisors (576528689164).

634066660436 is a wasteful number, since it uses less digits than its factorization.

634066660436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243495 (or 1243493 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 50.

The spelling of 634066660436 in words is "six hundred thirty-four billion, sixty-six million, six hundred sixty thousand, four hundred thirty-six".