23217706809 has 16 divisors (see below), whose sum is σ = 37523567040. Its totient is φ = 14071337280.

The previous prime is 23217706783. The next prime is 23217706819. The reversal of 23217706809 is 90860771232.

It is not a de Polignac number, because 23217706809 - 2¹² = 23217702713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23217706819) 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 15 ways as a sum of consecutive naturals, for example, 39086752 + ... + 39087345.

It is an arithmetic number, because the mean of its divisors is an integer number (2345222940).

Almost surely, 2^23217706809 is an apocalyptic number.

It is an amenable number.

23217706809 is a deficient number, since it is larger than the sum of its proper divisors (14305860231).

23217706809 is a wasteful number, since it uses less digits than its factorization.

23217706809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78174117 (or 78174111 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 23217706809 in words is "twenty-three billion, two hundred seventeen million, seven hundred six thousand, eight hundred nine".