172467663161 has 4 divisors (see below), whose sum is σ = 172527948324. Its totient is φ = 172407378000.

The previous prime is 172467663089. The next prime is 172467663187. The reversal of 172467663161 is 161366764271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 161366764271 = 223 ⋅723617777.

It can be written as a sum of positive squares in 2 ways, for example, as 97415773225 + 75051889936 = 312115^2 + 273956^2 .

It is a cyclic number.

It is not a de Polignac number, because 172467663161 - 2¹⁴ = 172467646777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172467663191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30138290 + ... + 30144011.

It is an arithmetic number, because the mean of its divisors is an integer number (43131987081).

Almost surely, 2^172467663161 is an apocalyptic number.

It is an amenable number.

172467663161 is a deficient number, since it is larger than the sum of its proper divisors (60285163).

172467663161 is an equidigital number, since it uses as much as digits as its factorization.

172467663161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60285162.

The product of its digits is 1524096, while the sum is 50.

The spelling of 172467663161 in words is "one hundred seventy-two billion, four hundred sixty-seven million, six hundred sixty-three thousand, one hundred sixty-one".