238356578172 has 24 divisors (see below), whose sum is σ = 556917961600. Its totient is φ = 79344676656.

The previous prime is 238356578171. The next prime is 238356578189. The reversal of 238356578172 is 271875653832.

238356578172 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×238356578172³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238356578171) 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, 13430272 + ... + 13448007.

Almost surely, 2^238356578172 is an apocalyptic number.

It is an amenable number.

238356578172 is an abundant number, since it is smaller than the sum of its proper divisors (318561383428).

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

238356578172 is a wasteful number, since it uses less digits than its factorization.

238356578172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26879025 (or 26879023 counting only the distinct ones).

The product of its digits is 16934400, while the sum is 57.

The spelling of 238356578172 in words is "two hundred thirty-eight billion, three hundred fifty-six million, five hundred seventy-eight thousand, one hundred seventy-two".