23145567817 has 8 divisors (see below), whose sum is σ = 23686842080. Its totient is φ = 22604430240.

The previous prime is 23145567799. The next prime is 23145567857. The reversal of 23145567817 is 71876554132.

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

It is a cyclic number.

It is not a de Polignac number, because 23145567817 - 2²³ = 23137179209 is a prime.

It is a super-2 number, since 2×23145567817² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23145567857) by changing a digit.

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, 361309 + ... + 420517.

It is an arithmetic number, because the mean of its divisors is an integer number (2960855260).

Almost surely, 2^23145567817 is an apocalyptic number.

It is an amenable number.

23145567817 is a deficient number, since it is larger than the sum of its proper divisors (541274263).

23145567817 is an equidigital number, since it uses as much as digits as its factorization.

23145567817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68343.

The product of its digits is 1411200, while the sum is 49.

The spelling of 23145567817 in words is "twenty-three billion, one hundred forty-five million, five hundred sixty-seven thousand, eight hundred seventeen".