318627172105 has 16 divisors (see below), whose sum is σ = 426812215104. Its totient is φ = 226339807680.

The previous prime is 318627172057. The next prime is 318627172109. The reversal of 318627172105 is 501271726813.

It is not a de Polignac number, because 318627172105 - 2⁹ = 318627171593 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (318627172109) 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, 67360674 + ... + 67365403.

It is an arithmetic number, because the mean of its divisors is an integer number (26675763444).

Almost surely, 2^318627172105 is an apocalyptic number.

It is an amenable number.

318627172105 is a deficient number, since it is larger than the sum of its proper divisors (108185042999).

318627172105 is a wasteful number, since it uses less digits than its factorization.

318627172105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134726136.

The product of its (nonzero) digits is 141120, while the sum is 43.

Adding to 318627172105 its reverse (501271726813), we get a palindrome (819898898918).

The spelling of 318627172105 in words is "three hundred eighteen billion, six hundred twenty-seven million, one hundred seventy-two thousand, one hundred five".