238180217568 has 96 divisors (see below), whose sum is σ = 635726278656. Its totient is φ = 78070745088.

The previous prime is 238180217563. The next prime is 238180217573. The reversal of 238180217568 is 865712081832.

It is an interprime number because it is at equal distance from previous prime (238180217563) and next prime (238180217573).

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 238180217568.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238180217563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1291255 + ... + 1464137.

It is an arithmetic number, because the mean of its divisors is an integer number (6622148736).

Almost surely, 2^238180217568 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 238180217568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317863139328).

238180217568 is an abundant number, since it is smaller than the sum of its proper divisors (397546061088).

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

238180217568 is a wasteful number, since it uses less digits than its factorization.

238180217568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173136 (or 173128 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 51.

The spelling of 238180217568 in words is "two hundred thirty-eight billion, one hundred eighty million, two hundred seventeen thousand, five hundred sixty-eight".