235109584161 has 9 divisors (see below), whose sum is σ = 339604833841. Its totient is φ = 156738753012.

The previous prime is 235109584147. The next prime is 235109584183. The reversal of 235109584161 is 161485901532.

It is a happy number.

The square root of 235109584161 is 484881.

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

235109584161 is a `hidden beast` number, since 2 + 3 + 5 + 1 + 0 + 9 + 584 + 1 + 61 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 235109584161 - 2¹⁹ = 235109059873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (235109584261) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1373830 + ... + 1535456.

Almost surely, 2^235109584161 is an apocalyptic number.

235109584161 is the 484881-st square number.

235109584161 is the 242441-st centered octagonal number.

It is an amenable number.

235109584161 is a deficient number, since it is larger than the sum of its proper divisors (104495249680).

235109584161 is an frugal number, since it uses more digits than its factorization.

235109584161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323260 (or 161630 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 235109584161 in words is "two hundred thirty-five billion, one hundred nine million, five hundred eighty-four thousand, one hundred sixty-one".