506168172238 has 16 divisors (see below), whose sum is σ = 764774720640. Its totient is φ = 251243552376.

The previous prime is 506168172221. The next prime is 506168172241. The reversal of 506168172238 is 832271861605.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 506168172191 and 506168172200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3850431 + ... + 3979717.

It is an arithmetic number, because the mean of its divisors is an integer number (47798420040).

Almost surely, 2^506168172238 is an apocalyptic number.

506168172238 is a deficient number, since it is larger than the sum of its proper divisors (258606548402).

506168172238 is a wasteful number, since it uses less digits than its factorization.

506168172238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143511.

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 506168172238 in words is "five hundred six billion, one hundred sixty-eight million, one hundred seventy-two thousand, two hundred thirty-eight".