23045265209 has 4 divisors (see below), whose sum is σ = 23130303360. Its totient is φ = 22960227060.

The previous prime is 23045265179. The next prime is 23045265223. The reversal of 23045265209 is 90256254032.

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 a de Polignac number, because none of the positive numbers 2^k-23045265209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23045265289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42518669 + ... + 42519210.

It is an arithmetic number, because the mean of its divisors is an integer number (5782575840).

Almost surely, 2^23045265209 is an apocalyptic number.

It is an amenable number.

23045265209 is a deficient number, since it is larger than the sum of its proper divisors (85038151).

23045265209 is an equidigital number, since it uses as much as digits as its factorization.

23045265209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85038150.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 23045265209 in words is "twenty-three billion, forty-five million, two hundred sixty-five thousand, two hundred nine".