23216317667537 has 4 divisors (see below), whose sum is σ = 23257554466800. Its totient is φ = 23175080868276.

The previous prime is 23216317667513. The next prime is 23216317667561. The reversal of 23216317667537 is 73576671361232.

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 an interprime number because it is at equal distance from previous prime (23216317667513) and next prime (23216317667561).

It is a cyclic number.

It is not a de Polignac number, because 23216317667537 - 2⁸ = 23216317667281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23216317664537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20618398787 + ... + 20618399912.

It is an arithmetic number, because the mean of its divisors is an integer number (5814388616700).

Almost surely, 2^{23216317667537} is an apocalyptic number.

It is an amenable number.

23216317667537 is a deficient number, since it is larger than the sum of its proper divisors (41236799263).

23216317667537 is an equidigital number, since it uses as much as digits as its factorization.

23216317667537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41236799262.

The product of its digits is 40007520, while the sum is 59.

The spelling of 23216317667537 in words is "twenty-three trillion, two hundred sixteen billion, three hundred seventeen million, six hundred sixty-seven thousand, five hundred thirty-seven".