238025638881 has 16 divisors (see below), whose sum is σ = 352865880000. Its totient is φ = 158577872544.

The previous prime is 238025638849. The next prime is 238025638889. The reversal of 238025638881 is 188836520832.

238025638881 is a `hidden beast` number, since 2 + 3 + 8 + 0 + 256 + 388 + 8 + 1 = 666.

It is not a de Polignac number, because 238025638881 - 2⁵ = 238025638849 is a prime.

It is a super-2 number, since 2×238025638881² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (238025638889) 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, 2900076 + ... + 2981021.

It is an arithmetic number, because the mean of its divisors is an integer number (22054117500).

Almost surely, 2^238025638881 is an apocalyptic number.

It is an amenable number.

238025638881 is a deficient number, since it is larger than the sum of its proper divisors (114840241119).

238025638881 is a wasteful number, since it uses less digits than its factorization.

238025638881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5882605 (or 5882599 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 54.

The spelling of 238025638881 in words is "two hundred thirty-eight billion, twenty-five million, six hundred thirty-eight thousand, eight hundred eighty-one".