172168647433 has 2 divisors, whose sum is σ = 172168647434. Its totient is φ = 172168647432.

The previous prime is 172168647379. The next prime is 172168647439. The reversal of 172168647433 is 334746861271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172161095929 + 7551504 = 414923^2 + 2748^2 .

It is a cyclic number.

It is not a de Polignac number, because 172168647433 - 2⁹ = 172168646921 is a prime.

It is not a weakly prime, because it can be changed into another prime (172168647439) by changing a digit.

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 as a sum of consecutive naturals, namely, 86084323716 + 86084323717.

It is an arithmetic number, because the mean of its divisors is an integer number (86084323717).

Almost surely, 2^172168647433 is an apocalyptic number.

It is an amenable number.

172168647433 is a deficient number, since it is larger than the sum of its proper divisors (1).

172168647433 is an equidigital number, since it uses as much as digits as its factorization.

172168647433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4064256, while the sum is 52.

The spelling of 172168647433 in words is "one hundred seventy-two billion, one hundred sixty-eight million, six hundred forty-seven thousand, four hundred thirty-three".