23230609928509 has 4 divisors (see below), whose sum is σ = 23231074600000. Its totient is φ = 23230145257020.

The previous prime is 23230609928503. The next prime is 23230609928527. The reversal of 23230609928509 is 90582990603232.

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 23230609928509 - 2¹⁹ = 23230609404221 is a prime.

It is a super-4 number, since 4×23230609928509⁴ (a number of 55 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3, 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23230609928503) 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, 232260747 + ... + 232360744.

It is an arithmetic number, because the mean of its divisors is an integer number (5807768650000).

Almost surely, 2^{23230609928509} is an apocalyptic number.

It is an amenable number.

23230609928509 is a deficient number, since it is larger than the sum of its proper divisors (464671491).

23230609928509 is an equidigital number, since it uses as much as digits as its factorization.

23230609928509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464671490.

The product of its (nonzero) digits is 12597120, while the sum is 58.

The spelling of 23230609928509 in words is "twenty-three trillion, two hundred thirty billion, six hundred nine million, nine hundred twenty-eight thousand, five hundred nine".