23164647265 has 4 divisors (see below), whose sum is σ = 27797576724. Its totient is φ = 18531717808.

The previous prime is 23164647241. The next prime is 23164647269. The reversal of 23164647265 is 56274646132.

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 17580373281 + 5584273984 = 132591^2 + 74728^2 .

It is a cyclic number.

It is not a de Polignac number, because 23164647265 - 2²¹ = 23162550113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23164647269) 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, 2316464722 + ... + 2316464731.

It is an arithmetic number, because the mean of its divisors is an integer number (6949394181).

Almost surely, 2^23164647265 is an apocalyptic number.

It is an amenable number.

23164647265 is a deficient number, since it is larger than the sum of its proper divisors (4632929459).

23164647265 is an equidigital number, since it uses as much as digits as its factorization.

23164647265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4632929458.

The product of its digits is 1451520, while the sum is 46.

The spelling of 23164647265 in words is "twenty-three billion, one hundred sixty-four million, six hundred forty-seven thousand, two hundred sixty-five".