12165572711 has 4 divisors (see below), whose sum is σ = 12247221000. Its totient is φ = 12083924424.

The previous prime is 12165572641. The next prime is 12165572753. The reversal of 12165572711 is 11727556121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12165572711 - 2¹⁴ = 12165556327 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 (12165572411) 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, 40823921 + ... + 40824218.

It is an arithmetic number, because the mean of its divisors is an integer number (3061805250).

Almost surely, 2^12165572711 is an apocalyptic number.

12165572711 is a deficient number, since it is larger than the sum of its proper divisors (81648289).

12165572711 is an equidigital number, since it uses as much as digits as its factorization.

12165572711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81648288.

The product of its digits is 29400, while the sum is 38.

The spelling of 12165572711 in words is "twelve billion, one hundred sixty-five million, five hundred seventy-two thousand, seven hundred eleven".