238384222155 has 128 divisors (see below), whose sum is σ = 449268710400. Its totient is φ = 119780508672.

The previous prime is 238384222147. The next prime is 238384222159. The reversal of 238384222155 is 551222483832.

238384222155 is a `hidden beast` number, since 2 + 3 + 8 + 3 + 8 + 422 + 215 + 5 = 666.

It is not a de Polignac number, because 238384222155 - 2³ = 238384222147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 238384222155.

It is not an unprimeable number, because it can be changed into a prime (238384222159) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 19739199 + ... + 19751271.

It is an arithmetic number, because the mean of its divisors is an integer number (3509911800).

Almost surely, 2^238384222155 is an apocalyptic number.

238384222155 is a deficient number, since it is larger than the sum of its proper divisors (210884488245).

238384222155 is a wasteful number, since it uses less digits than its factorization.

238384222155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12250 (or 12244 counting only the distinct ones).

The product of its digits is 921600, while the sum is 45.

The spelling of 238384222155 in words is "two hundred thirty-eight billion, three hundred eighty-four million, two hundred twenty-two thousand, one hundred fifty-five".