634363525616 has 20 divisors (see below), whose sum is σ = 1268727052224. Its totient is φ = 306950092800.

The previous prime is 634363525571. The next prime is 634363525637. The reversal of 634363525616 is 616525363436.

634363525616 is an admirable number.

It is a super-2 number, since 2×634363525616² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 639478865 + ... + 639479856.

Almost surely, 2^634363525616 is an apocalyptic number.

It is an amenable number.

634363525616 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

634363525616 is a wasteful number, since it uses less digits than its factorization.

634363525616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278958760 (or 1278958754 counting only the distinct ones).

The product of its digits is 6998400, while the sum is 50.

The spelling of 634363525616 in words is "six hundred thirty-four billion, three hundred sixty-three million, five hundred twenty-five thousand, six hundred sixteen".