23909520185 has 8 divisors (see below), whose sum is σ = 28693901376. Its totient is φ = 19125964720.

The previous prime is 23909520169. The next prime is 23909520197. The reversal of 23909520185 is 58102590932.

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

It is not a de Polignac number, because 23909520185 - 2⁴ = 23909520169 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 140831 + ... + 260100.

It is an arithmetic number, because the mean of its divisors is an integer number (3586737672).

Almost surely, 2^23909520185 is an apocalyptic number.

It is an amenable number.

23909520185 is a deficient number, since it is larger than the sum of its proper divisors (4784381191).

23909520185 is a wasteful number, since it uses less digits than its factorization.

23909520185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412863.

The product of its (nonzero) digits is 194400, while the sum is 44.

The spelling of 23909520185 in words is "twenty-three billion, nine hundred nine million, five hundred twenty thousand, one hundred eighty-five".