634914913968 has 120 divisors (see below), whose sum is σ = 1843845364816. Its totient is φ = 211505644800.

The previous prime is 634914913949. The next prime is 634914913981. The reversal of 634914913968 is 869319419436.

634914913968 is a `hidden beast` number, since 6 + 3 + 491 + 4 + 9 + 139 + 6 + 8 = 666.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6252078 + ... + 6352818.

Almost surely, 2^634914913968 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 634914913968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (921922682408).

634914913968 is an abundant number, since it is smaller than the sum of its proper divisors (1208930450848).

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

634914913968 is a wasteful number, since it uses less digits than its factorization.

634914913968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102385 (or 102367 counting only the distinct ones).

The product of its digits is 30233088, while the sum is 63.

The spelling of 634914913968 in words is "six hundred thirty-four billion, nine hundred fourteen million, nine hundred thirteen thousand, nine hundred sixty-eight".