634464620512 has 24 divisors (see below), whose sum is σ = 1264913647200. Its totient is φ = 313216710144.

The previous prime is 634464620443. The next prime is 634464620519. The reversal of 634464620512 is 215026464436.

634464620512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×634464620512² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634464620519) 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, 125484937 + ... + 125489992.

It is an arithmetic number, because the mean of its divisors is an integer number (52704735300).

Almost surely, 2^634464620512 is an apocalyptic number.

It is an amenable number.

634464620512 is a deficient number, since it is larger than the sum of its proper divisors (630449026688).

634464620512 is a wasteful number, since it uses less digits than its factorization.

634464620512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250975018 (or 250975010 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 634464620512 in words is "six hundred thirty-four billion, four hundred sixty-four million, six hundred twenty thousand, five hundred twelve".