172228152608 has 18 divisors (see below), whose sum is σ = 339078797379. Its totient is φ = 86112902496.

The previous prime is 172228152599. The next prime is 172228152631. The reversal of 172228152608 is 806251822271.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 86114076304 + 86114076304 = 293452^2 + 293452^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=293452.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2310935 + ... + 2384297.

Almost surely, 2^172228152608 is an apocalyptic number.

It is an amenable number.

172228152608 is a deficient number, since it is larger than the sum of its proper divisors (166850644771).

172228152608 is an frugal number, since it uses more digits than its factorization.

172228152608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146736 (or 73365 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 44.

Adding to 172228152608 its reverse (806251822271), we get a palindrome (978479974879).

The spelling of 172228152608 in words is "one hundred seventy-two billion, two hundred twenty-eight million, one hundred fifty-two thousand, six hundred eight".