23172134112065 has 4 divisors (see below), whose sum is σ = 27806560934484. Its totient is φ = 18537707289648.

The previous prime is 23172134111999. The next prime is 23172134112103. The reversal of 23172134112065 is 56021143127132.

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 2359861281856 + 20812272830209 = 1536184^2 + 4562047^2 .

It is a cyclic number.

It is not a de Polignac number, because 23172134112065 - 2⁸ = 23172134111809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2317213411202 + ... + 2317213411211.

It is an arithmetic number, because the mean of its divisors is an integer number (6951640233621).

Almost surely, 2^{23172134112065} is an apocalyptic number.

It is an amenable number.

23172134112065 is a deficient number, since it is larger than the sum of its proper divisors (4634426822419).

23172134112065 is an equidigital number, since it uses as much as digits as its factorization.

23172134112065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4634426822418.

The product of its (nonzero) digits is 60480, while the sum is 38.

Adding to 23172134112065 its reverse (56021143127132), we get a palindrome (79193277239197).

The spelling of 23172134112065 in words is "twenty-three trillion, one hundred seventy-two billion, one hundred thirty-four million, one hundred twelve thousand, sixty-five".