634634320008 has 32 divisors (see below), whose sum is σ = 1708630862400. Its totient is φ = 195272098368.

The previous prime is 634634320007. The next prime is 634634320037. The reversal of 634634320008 is 800023436436.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (634634320007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1017041868 + ... + 1017042491.

It is an arithmetic number, because the mean of its divisors is an integer number (53394714450).

Almost surely, 2^634634320008 is an apocalyptic number.

It is an amenable number.

634634320008 is an abundant number, since it is smaller than the sum of its proper divisors (1073996542392).

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

634634320008 is a wasteful number, since it uses less digits than its factorization.

634634320008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2034084381 (or 2034084377 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 39.

The spelling of 634634320008 in words is "six hundred thirty-four billion, six hundred thirty-four million, three hundred twenty thousand, eight".