638842606304 has 48 divisors (see below), whose sum is σ = 1437509729376. Its totient is φ = 273768000000.

The previous prime is 638842606289. The next prime is 638842606307. The reversal of 638842606304 is 403606248836.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (638842606307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2900054 + ... + 3112554.

It is an arithmetic number, because the mean of its divisors is an integer number (29948119362).

Almost surely, 2^638842606304 is an apocalyptic number.

It is an amenable number.

638842606304 is an abundant number, since it is smaller than the sum of its proper divisors (798667123072).

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

638842606304 is a wasteful number, since it uses less digits than its factorization.

638842606304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225939 (or 225931 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 50.

The spelling of 638842606304 in words is "six hundred thirty-eight billion, eight hundred forty-two million, six hundred six thousand, three hundred four".