634463331632 has 80 divisors (see below), whose sum is σ = 1394119208160. Its totient is φ = 277295394816.

The previous prime is 634463331617. The next prime is 634463331647. The reversal of 634463331632 is 236133364436.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (634463331617) and next prime (634463331647).

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 15 ways as a sum of consecutive naturals, for example, 9280808 + ... + 9348920.

It is an arithmetic number, because the mean of its divisors is an integer number (17426490102).

Almost surely, 2^634463331632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 634463331632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (697059604080).

634463331632 is an abundant number, since it is smaller than the sum of its proper divisors (759655876528).

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

634463331632 is a wasteful number, since it uses less digits than its factorization.

634463331632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70510 (or 70504 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 44.

The spelling of 634463331632 in words is "six hundred thirty-four billion, four hundred sixty-three million, three hundred thirty-one thousand, six hundred thirty-two".