23605608516409 has 4 divisors (see below), whose sum is σ = 23613176845440. Its totient is φ = 23598040187380.

The previous prime is 23605608516407. The next prime is 23605608516487. The reversal of 23605608516409 is 90461580650632.

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 23605608516409 - 2¹ = 23605608516407 is a prime.

It is a super-2 number, since 2×23605608516409² (a number of 28 digits) contains 22 as substring.

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 23605608516409.

It is not an unprimeable number, because it can be changed into a prime (23605608516407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3784159837 + ... + 3784166074.

It is an arithmetic number, because the mean of its divisors is an integer number (5903294211360).

Almost surely, 2^{23605608516409} is an apocalyptic number.

It is an amenable number.

23605608516409 is a deficient number, since it is larger than the sum of its proper divisors (7568329031).

23605608516409 is an equidigital number, since it uses as much as digits as its factorization.

23605608516409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7568329030.

The product of its (nonzero) digits is 9331200, while the sum is 55.

The spelling of 23605608516409 in words is "twenty-three trillion, six hundred five billion, six hundred eight million, five hundred sixteen thousand, four hundred nine".