238516836165 has 16 divisors (see below), whose sum is σ = 424029931200. Its totient is φ = 127208979216.

The previous prime is 238516836163. The next prime is 238516836179. The reversal of 238516836165 is 561638615832.

It is a happy number.

238516836165 is a `hidden beast` number, since 2 + 3 + 8 + 5 + 16 + 8 + 3 + 616 + 5 = 666.

238516836165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 238516836165 - 2¹ = 238516836163 is a prime.

It is a super-2 number, since 2×238516836165² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238516836163) by changing a digit.

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, 883395555 + ... + 883395824.

It is an arithmetic number, because the mean of its divisors is an integer number (26501870700).

Almost surely, 2^238516836165 is an apocalyptic number.

It is an amenable number.

238516836165 is a deficient number, since it is larger than the sum of its proper divisors (185513095035).

238516836165 is a wasteful number, since it uses less digits than its factorization.

238516836165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1766791393 (or 1766791387 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 54.

The spelling of 238516836165 in words is "two hundred thirty-eight billion, five hundred sixteen million, eight hundred thirty-six thousand, one hundred sixty-five".