238207988951808 has 144 divisors (see below), whose sum is σ = 675293224596480. Its totient is φ = 74284420907008.

The previous prime is 238207988951797. The next prime is 238207988951813. The reversal of 238207988951808 is 808159889702832.

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, 52445688 + ... + 56806391.

It is an arithmetic number, because the mean of its divisors is an integer number (4689536281920).

Almost surely, 2^{238207988951808} is an apocalyptic number.

It is an amenable number.

238207988951808 is an abundant number, since it is smaller than the sum of its proper divisors (437085235644672).

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

238207988951808 is a wasteful number, since it uses less digits than its factorization.

238207988951808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109252282 (or 109252268 counting only the distinct ones).

The product of its (nonzero) digits is 1114767360, while the sum is 78.

The spelling of 238207988951808 in words is "two hundred thirty-eight trillion, two hundred seven billion, nine hundred eighty-eight million, nine hundred fifty-one thousand, eight hundred eight".