634434430040652 has 24 divisors (see below), whose sum is σ = 1480347924009136. Its totient is φ = 211478011835328.

The previous prime is 634434430040599. The next prime is 634434430040657. The reversal of 634434430040652 is 256040034434436.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (634434430040657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4754718 + ... + 35937114.

Almost surely, 2^{634434430040652} is an apocalyptic number.

It is an amenable number.

634434430040652 is an abundant number, since it is smaller than the sum of its proper divisors (845913493968484).

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

634434430040652 is a wasteful number, since it uses less digits than its factorization.

634434430040652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32877897 (or 32877895 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 48.

The spelling of 634434430040652 in words is "six hundred thirty-four trillion, four hundred thirty-four billion, four hundred thirty million, forty thousand, six hundred fifty-two".