12523161156717 has 4 divisors (see below), whose sum is σ = 16697548208960. Its totient is φ = 8348774104476.

The previous prime is 12523161156707. The next prime is 12523161156743. The reversal of 12523161156717 is 71765116132521.

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 not a de Polignac number, because 12523161156717 - 2¹⁹ = 12523160632429 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 (12523161156707) 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, 2087193526117 + ... + 2087193526122.

It is an arithmetic number, because the mean of its divisors is an integer number (4174387052240).

Almost surely, 2^{12523161156717} is an apocalyptic number.

It is an amenable number.

12523161156717 is a deficient number, since it is larger than the sum of its proper divisors (4174387052243).

12523161156717 is an equidigital number, since it uses as much as digits as its factorization.

12523161156717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4174387052242.

The product of its digits is 529200, while the sum is 48.

The spelling of 12523161156717 in words is "twelve trillion, five hundred twenty-three billion, one hundred sixty-one million, one hundred fifty-six thousand, seven hundred seventeen".