267153563161 has 9 divisors (see below), whose sum is σ = 268102267293. Its totient is φ = 266208209760.

The previous prime is 267153563147. The next prime is 267153563191. The reversal of 267153563161 is 161365351762.

The square root of 267153563161 is 516869.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 7767073161 + 259386490000 = 88131^2 + 509300^2 .

It is not a de Polignac number, because 267153563161 - 2⁹ = 267153562649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (267153563191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 180386541 + ... + 180388021.

Almost surely, 2^267153563161 is an apocalyptic number.

267153563161 is the 516869-th square number.

267153563161 is the 258435-th centered octagonal number.

It is an amenable number.

267153563161 is a deficient number, since it is larger than the sum of its proper divisors (948704132).

267153563161 is an frugal number, since it uses more digits than its factorization.

267153563161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3660 (or 1830 counting only the distinct ones).

The product of its digits is 680400, while the sum is 46.

The spelling of 267153563161 in words is "two hundred sixty-seven billion, one hundred fifty-three million, five hundred sixty-three thousand, one hundred sixty-one".