23623500517 has 4 divisors (see below), whose sum is σ = 23663338380. Its totient is φ = 23583662656.

The previous prime is 23623500503. The next prime is 23623500521. The reversal of 23623500517 is 71500532632.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5751553921 + 17871946596 = 75839^2 + 133686^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23623500517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23623500547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19918042 + ... + 19919227.

It is an arithmetic number, because the mean of its divisors is an integer number (5915834595).

Almost surely, 2^23623500517 is an apocalyptic number.

It is an amenable number.

23623500517 is a deficient number, since it is larger than the sum of its proper divisors (39837863).

23623500517 is an equidigital number, since it uses as much as digits as its factorization.

23623500517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39837862.

The product of its (nonzero) digits is 37800, while the sum is 34.

The spelling of 23623500517 in words is "twenty-three billion, six hundred twenty-three million, five hundred thousand, five hundred seventeen".