23405796569 has 8 divisors (see below), whose sum is σ = 23433413640. Its totient is φ = 23378198400.

The previous prime is 23405796527. The next prime is 23405796581. The reversal of 23405796569 is 96569750432.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6081972169 + 17323824400 = 77987^2 + 131620^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23405796569 is a prime.

It is a super-2 number, since 2×23405796569² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23405799569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5490899 + ... + 5495159.

It is an arithmetic number, because the mean of its divisors is an integer number (2929176705).

Almost surely, 2^23405796569 is an apocalyptic number.

It is an amenable number.

23405796569 is a deficient number, since it is larger than the sum of its proper divisors (27617071).

23405796569 is a wasteful number, since it uses less digits than its factorization.

23405796569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9451.

The product of its (nonzero) digits is 12247200, while the sum is 56.

The spelling of 23405796569 in words is "twenty-three billion, four hundred five million, seven hundred ninety-six thousand, five hundred sixty-nine".