23819909569 has 9 divisors (see below), whose sum is σ = 25142667393. Its totient is φ = 22563452052.

The previous prime is 23819909527. The next prime is 23819909591. The reversal of 23819909569 is 96590991832.

The square root of 23819909569 is 154337.

It is a perfect power (a square), and thus also a powerful number.

It is a de Polignac number, because none of the positive numbers 2^k-23819909569 is a prime.

It is a super-2 number, since 2×23819909569² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23819919569) 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 8 ways as a sum of consecutive naturals, for example, 2928342 + ... + 2936464.

Almost surely, 2^23819909569 is an apocalyptic number.

23819909569 is the 154337-th square number.

23819909569 is the 77169-th centered octagonal number.

It is an amenable number.

23819909569 is a deficient number, since it is larger than the sum of its proper divisors (1322757824).

23819909569 is an frugal number, since it uses more digits than its factorization.

23819909569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16284 (or 8142 counting only the distinct ones).

The product of its (nonzero) digits is 9447840, while the sum is 61.

The spelling of 23819909569 in words is "twenty-three billion, eight hundred nineteen million, nine hundred nine thousand, five hundred sixty-nine".