23509123302217 has 16 divisors (see below), whose sum is σ = 27121938435072. Its totient is φ = 19959945826320.

The previous prime is 23509123302179. The next prime is 23509123302239. The reversal of 23509123302217 is 71220332190532.

It is a cyclic number.

It is not a de Polignac number, because 23509123302217 - 2³¹ = 23506975818569 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23509123302217.

It is not an unprimeable number, because it can be changed into a prime (23509123302257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4336638 + ... + 8113240.

It is an arithmetic number, because the mean of its divisors is an integer number (1695121152192).

Almost surely, 2^{23509123302217} is an apocalyptic number.

It is an amenable number.

23509123302217 is a deficient number, since it is larger than the sum of its proper divisors (3612815132855).

23509123302217 is a wasteful number, since it uses less digits than its factorization.

23509123302217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3785028.

The product of its (nonzero) digits is 136080, while the sum is 40.

Adding to 23509123302217 its reverse (71220332190532), we get a palindrome (94729455492749).

The spelling of 23509123302217 in words is "twenty-three trillion, five hundred nine billion, one hundred twenty-three million, three hundred two thousand, two hundred seventeen".