173133384649 has 27 divisors (see below), whose sum is σ = 184112165223. Its totient is φ = 162795554064.

The previous prime is 173133384647. The next prime is 173133384659. The reversal of 173133384649 is 946483331371.

The square root of 173133384649 is 416093.

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

It can be written as a sum of positive squares in only one way, i.e., 161248024249 + 11885360400 = 401557^2 + 109020^2 .

It is not a de Polignac number, because 173133384649 - 2¹ = 173133384647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 173133384596 and 173133384605.

It is not an unprimeable number, because it can be changed into a prime (173133384647) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 756040867 + ... + 756041095.

Almost surely, 2^173133384649 is an apocalyptic number.

173133384649 is the 416093-rd square number.

173133384649 is the 208047-th centered octagonal number.

It is an amenable number.

173133384649 is a deficient number, since it is larger than the sum of its proper divisors (10978780574).

173133384649 is an frugal number, since it uses more digits than its factorization.

173133384649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662 (or 331 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 52.

The spelling of 173133384649 in words is "one hundred seventy-three billion, one hundred thirty-three million, three hundred eighty-four thousand, six hundred forty-nine".