201043240009 has 4 divisors (see below), whose sum is σ = 201111928704. Its totient is φ = 200974551316.

The previous prime is 201043240007. The next prime is 201043240061. The reversal of 201043240009 is 900042340102.

201043240009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201043240009 - 2¹ = 201043240007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201043240007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34339957 + ... + 34345810.

It is an arithmetic number, because the mean of its divisors is an integer number (50277982176).

Almost surely, 2^201043240009 is an apocalyptic number.

It is an amenable number.

201043240009 is a deficient number, since it is larger than the sum of its proper divisors (68688695).

201043240009 is an equidigital number, since it uses as much as digits as its factorization.

201043240009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68688694.

The product of its (nonzero) digits is 1728, while the sum is 25.

The spelling of 201043240009 in words is "two hundred one billion, forty-three million, two hundred forty thousand, nine".