23624612209 has 27 divisors (see below), whose sum is σ = 26430940641. Its totient is φ = 21100347840.

The previous prime is 23624612197. The next prime is 23624612213. The reversal of 23624612209 is 90221642632.

The square root of 23624612209 is 153703.

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 6351293025 + 17273319184 = 79695^2 + 131428^2 .

It is not a de Polignac number, because 23624612209 - 2¹⁵ = 23624579441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23624612269) 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, 150475159 + ... + 150475315.

Almost surely, 2^23624612209 is an apocalyptic number.

23624612209 is the 153703-rd square number.

23624612209 is the 76852-nd centered octagonal number.

It is an amenable number.

23624612209 is a deficient number, since it is larger than the sum of its proper divisors (2806328432).

23624612209 is an frugal number, since it uses more digits than its factorization.

23624612209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 37.

The spelling of 23624612209 in words is "twenty-three billion, six hundred twenty-four million, six hundred twelve thousand, two hundred nine".