238998471040 has 64 divisors (see below), whose sum is σ = 652977977760. Its totient is φ = 81942331392.

The previous prime is 238998471001. The next prime is 238998471073. The reversal of 238998471040 is 40174899832.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

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, 26669457 + ... + 26678416.

Almost surely, 2^238998471040 is an apocalyptic number.

238998471040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238998471040 is an abundant number, since it is smaller than the sum of its proper divisors (413979506720).

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

238998471040 is an equidigital number, since it uses as much as digits as its factorization.

238998471040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53347899 (or 53347887 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 55.

The spelling of 238998471040 in words is "two hundred thirty-eight billion, nine hundred ninety-eight million, four hundred seventy-one thousand, forty".