23442998189209 has 27 divisors (see below), whose sum is σ = 24350054835519. Its totient is φ = 22568971520160.

The previous prime is 23442998189197. The next prime is 23442998189213. The reversal of 23442998189209 is 90298189924432.

The square root of 23442998189209 is 4841797.

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., 149556225625 + 23293441963584 = 386725^2 + 4826328^2 .

It is not a de Polignac number, because 23442998189209 - 2⁷ = 23442998189081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23442998184209) 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 26 ways as a sum of consecutive naturals, for example, 46979956042 + ... + 46979956540.

It is an arithmetic number, because the mean of its divisors is an integer number (901853882797).

Almost surely, 2^{23442998189209} is an apocalyptic number.

23442998189209 is the 4841797-th square number.

23442998189209 is the 2420899-th centered octagonal number.

It is an amenable number.

23442998189209 is a deficient number, since it is larger than the sum of its proper divisors (907056646310).

23442998189209 is an frugal number, since it uses more digits than its factorization.

23442998189209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686 (or 843 counting only the distinct ones).

The product of its (nonzero) digits is 161243136, while the sum is 70.

The spelling of 23442998189209 in words is "twenty-three trillion, four hundred forty-two billion, nine hundred ninety-eight million, one hundred eighty-nine thousand, two hundred nine".