23205337909 has 32 divisors (see below), whose sum is σ = 26898310656. Its totient is φ = 19827624960.

The previous prime is 23205337901. The next prime is 23205337913. The reversal of 23205337909 is 90973350232.

It is not a de Polignac number, because 23205337909 - 2³ = 23205337901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23205337901) 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 31 ways as a sum of consecutive naturals, for example, 17486404 + ... + 17487730.

It is an arithmetic number, because the mean of its divisors is an integer number (840572208).

Almost surely, 2^23205337909 is an apocalyptic number.

It is an amenable number.

23205337909 is a deficient number, since it is larger than the sum of its proper divisors (3692972747).

23205337909 is a wasteful number, since it uses less digits than its factorization.

23205337909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2605.

The product of its (nonzero) digits is 306180, while the sum is 43.

It can be divided in two parts, 232053 and 37909, that added together give a palindrome (269962).

The spelling of 23205337909 in words is "twenty-three billion, two hundred five million, three hundred thirty-seven thousand, nine hundred nine".